Mount embedded secrets as files (#293)

## Overview
Adds support for mounting secrets as files.

This change is part of series to enable mounting secrets as files:
- flyte fork: https://github.com/unionai/flyte/pull/293 (this change)
- cloud: https://github.com/unionai/cloud/pull/7975
- unionai: https://github.com/unionai/unionai/pull/237

## Test Plan
1. Deploy to dogfood.
2. Create secret using `-f` flag and a file.
3. Run a workflow using the file. Verify that secret value was read correctly.

## Rollout Plan
Run `managed-cluster-<env>-sync-all`.

## Upstream Changes
Should this change be upstreamed to OSS (flyteorg/flyte)? If so, please check this box for auditing. Note, this is the responsibility of each developer. See [this guide](https://unionai.atlassian.net/wiki/spaces/ENG/pages/447610883/Flyte+-+Union+Cloud+Development+Runbook/#When-are-versions-updated%3F).
- [ ] To be upstreamed

## Issue
ref COR-811

## Checklist
* [ ] Added tests
* [ ] Ran a deploy dry run and shared the terraform plan
* [ ] Added logging and metrics
* [ ] Updated [dashboards](https://unionai.grafana.net/dashboards) and [alerts](https://unionai.grafana.net/alerting/list)
* [ ] Updated documentation

Makefile

@@ -1,4 +1,5 @@
 export REPOSITORY=flyte
+export REPO_ROOT=.
 include boilerplate/flyte/end2end/Makefile
 include boilerplate/flyte/golang_test_targets/Makefile
 

fasttask/plugin/go.mod

@@ -25,13 +25,28 @@ require (
 	cloud.google.com/go/compute v1.23.3 // indirect
 	cloud.google.com/go/compute/metadata v0.2.3 // indirect
 	cloud.google.com/go/iam v1.1.5 // indirect
+	cloud.google.com/go/secretmanager v1.11.4 // indirect
 	cloud.google.com/go/storage v1.36.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.7.2 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.3.1 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.3.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.1.0 // indirect
 	github.com/AzureAD/microsoft-authentication-library-for-go v1.2.0 // indirect
 	github.com/aws/aws-sdk-go v1.44.2 // indirect
+	github.com/aws/aws-sdk-go-v2 v1.24.1 // indirect
+	github.com/aws/aws-sdk-go-v2/config v1.26.1 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.16.12 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.14.10 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.2.10 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.5.10 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.7.2 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.10.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.10.9 // indirect
+	github.com/aws/aws-sdk-go-v2/service/secretsmanager v1.26.1 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.18.5 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.21.5 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.26.5 // indirect
+	github.com/aws/smithy-go v1.19.0 // indirect
 	github.com/benlaurie/objecthash v0.0.0-20180202135721-d1e3d6079fc1 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
@@ -108,6 +123,7 @@ require (
 	golang.org/x/term v0.19.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
+	gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect
 	google.golang.org/api v0.155.0 // indirect
 	google.golang.org/appengine v1.6.8 // indirect
 	google.golang.org/genproto v0.0.0-20240123012728-ef4313101c80 // indirect

fasttask/plugin/go.sum

@@ -7,6 +7,8 @@ cloud.google.com/go/compute/metadata v0.2.3 h1:mg4jlk7mCAj6xXp9UJ4fjI9VUI5rubuGB
 cloud.google.com/go/compute/metadata v0.2.3/go.mod h1:VAV5nSsACxMJvgaAuX6Pk2AawlZn8kiOGuCv6gTkwuA=
 cloud.google.com/go/iam v1.1.5 h1:1jTsCu4bcsNsE4iiqNT5SHwrDRCfRmIaaaVFhRveTJI=
 cloud.google.com/go/iam v1.1.5/go.mod h1:rB6P/Ic3mykPbFio+vo7403drjlgvoWfYpJhMXEbzv8=
+cloud.google.com/go/secretmanager v1.11.4 h1:krnX9qpG2kR2fJ+u+uNyNo+ACVhplIAS4Pu7u+4gd+k=
+cloud.google.com/go/secretmanager v1.11.4/go.mod h1:wreJlbS9Zdq21lMzWmJ0XhWW2ZxgPeahsqeV/vZoJ3w=
 cloud.google.com/go/storage v1.36.0 h1:P0mOkAcaJxhCTvAkMhxMfrTKiNcub4YmmPBtlhAyTr8=
 cloud.google.com/go/storage v1.36.0/go.mod h1:M6M/3V/D3KpzMTJyPOR/HU6n2Si5QdaXYEsng2xgOs8=
 github.com/Azure/azure-sdk-for-go/sdk/azcore v1.7.2 h1:t5+QXLCK9SVi0PPdaY0PrFvYUo24KwA0QwxnaHRSVd4=
@@ -26,6 +28,34 @@ github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/aws/aws-sdk-go v1.44.2 h1:5VBk5r06bgxgRKVaUtm1/4NT/rtrnH2E4cnAYv5zgQc=
 github.com/aws/aws-sdk-go v1.44.2/go.mod h1:y4AeaBuwd2Lk+GepC1E9v0qOiTws0MIWAX4oIKwKHZo=
+github.com/aws/aws-sdk-go-v2 v1.24.1 h1:xAojnj+ktS95YZlDf0zxWBkbFtymPeDP+rvUQIH3uAU=
+github.com/aws/aws-sdk-go-v2 v1.24.1/go.mod h1:LNh45Br1YAkEKaAqvmE1m8FUx6a5b/V0oAKV7of29b4=
+github.com/aws/aws-sdk-go-v2/config v1.26.1 h1:z6DqMxclFGL3Zfo+4Q0rLnAZ6yVkzCRxhRMsiRQnD1o=
+github.com/aws/aws-sdk-go-v2/config v1.26.1/go.mod h1:ZB+CuKHRbb5v5F0oJtGdhFTelmrxd4iWO1lf0rQwSAg=
+github.com/aws/aws-sdk-go-v2/credentials v1.16.12 h1:v/WgB8NxprNvr5inKIiVVrXPuuTegM+K8nncFkr1usU=
+github.com/aws/aws-sdk-go-v2/credentials v1.16.12/go.mod h1:X21k0FjEJe+/pauud82HYiQbEr9jRKY3kXEIQ4hXeTQ=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.14.10 h1:w98BT5w+ao1/r5sUuiH6JkVzjowOKeOJRHERyy1vh58=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.14.10/go.mod h1:K2WGI7vUvkIv1HoNbfBA1bvIZ+9kL3YVmWxeKuLQsiw=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.2.10 h1:vF+Zgd9s+H4vOXd5BMaPWykta2a6Ih0AKLq/X6NYKn4=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.2.10/go.mod h1:6BkRjejp/GR4411UGqkX8+wFMbFbqsUIimfK4XjOKR4=
+github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.5.10 h1:nYPe006ktcqUji8S2mqXf9c/7NdiKriOwMvWQHgYztw=
+github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.5.10/go.mod h1:6UV4SZkVvmODfXKql4LCbaZUpF7HO2BX38FgBf9ZOLw=
+github.com/aws/aws-sdk-go-v2/internal/ini v1.7.2 h1:GrSw8s0Gs/5zZ0SX+gX4zQjRnRsMJDJ2sLur1gRBhEM=
+github.com/aws/aws-sdk-go-v2/internal/ini v1.7.2/go.mod h1:6fQQgfuGmw8Al/3M2IgIllycxV7ZW7WCdVSqfBeUiCY=
+github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.10.4 h1:/b31bi3YVNlkzkBrm9LfpaKoaYZUxIAj4sHfOTmLfqw=
+github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.10.4/go.mod h1:2aGXHFmbInwgP9ZfpmdIfOELL79zhdNYNmReK8qDfdQ=
+github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.10.9 h1:Nf2sHxjMJR8CSImIVCONRi4g0Su3J+TSTbS7G0pUeMU=
+github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.10.9/go.mod h1:idky4TER38YIjr2cADF1/ugFMKvZV7p//pVeV5LZbF0=
+github.com/aws/aws-sdk-go-v2/service/secretsmanager v1.26.1 h1:Sn3MAV9YeACCULaxNWWYFH1a6G4wYFwBn3/TA5MwE2Q=
+github.com/aws/aws-sdk-go-v2/service/secretsmanager v1.26.1/go.mod h1:qutL00aW8GSo2D0I6UEOqMvRS3ZyuBrOC1BLe5D2jPc=
+github.com/aws/aws-sdk-go-v2/service/sso v1.18.5 h1:ldSFWz9tEHAwHNmjx2Cvy1MjP5/L9kNoR0skc6wyOOM=
+github.com/aws/aws-sdk-go-v2/service/sso v1.18.5/go.mod h1:CaFfXLYL376jgbP7VKC96uFcU8Rlavak0UlAwk1Dlhc=
+github.com/aws/aws-sdk-go-v2/service/ssooidc v1.21.5 h1:2k9KmFawS63euAkY4/ixVNsYYwrwnd5fIvgEKkfZFNM=
+github.com/aws/aws-sdk-go-v2/service/ssooidc v1.21.5/go.mod h1:W+nd4wWDVkSUIox9bacmkBP5NMFQeTJ/xqNabpzSR38=
+github.com/aws/aws-sdk-go-v2/service/sts v1.26.5 h1:5UYvv8JUvllZsRnfrcMQ+hJ9jNICmcgKPAO1CER25Wg=
+github.com/aws/aws-sdk-go-v2/service/sts v1.26.5/go.mod h1:XX5gh4CB7wAs4KhcF46G6C8a2i7eupU19dcAAE+EydU=
+github.com/aws/smithy-go v1.19.0 h1:KWFKQV80DpP3vJrrA9sVAHQ5gc2z8i4EzrLhLlWXcBM=
+github.com/aws/smithy-go v1.19.0/go.mod h1:NukqUGpCZIILqqiV0NIjeFh24kd/FAa4beRb6nbIUPE=
 github.com/benlaurie/objecthash v0.0.0-20180202135721-d1e3d6079fc1 h1:VRtJdDi2lqc3MFwmouppm2jlm6icF+7H3WYKpLENMTo=
 github.com/benlaurie/objecthash v0.0.0-20180202135721-d1e3d6079fc1/go.mod h1:jvdWlw8vowVGnZqSDC7yhPd7AifQeQbRDkZcQXV2nRg=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=