Issue 452: Correcting setup script and updating documentation

[SrishT]

Signed-off-by: SrishT [email protected]

Change log description

To update the setup script to make use of the published charts which installs pravega along with its various dependencies. The failure policy of the webhooks also need to be modified so that the does not allow any pravega deployments if an incorrect certificate has been provided

Purpose of the change

Fixes #452

What the code does

Updates setup script touse published charts. Also modifies the failure policy of the Validating Webhook to make it fail in case an invalid certificate has been provided to it.

How to verify it

Pravega with all its dependencies should get deployed by providing the following command

./pravegacluster.sh deploy

Also, if the correct certificate has not been configured while installing the pravega operator, all pravega cluster deployments irrespective of their version should fail with the following error

Error: Internal error occurred: failed calling webhook "pravegawebhook.pravega.io": Post https://pravega-webhook-svc.default.svc:443/validate-pravega-pravega-io-v1beta1-pravegacluster?timeout=30s: x509: certificate signed by unknown authority

[codecov-commenter]

Codecov Report

Merging #455 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #455   +/-   ##
=======================================
  Coverage   75.29%   75.29%           
=======================================
  Files          15       15           
  Lines        3068     3068           
=======================================
  Hits         2310     2310           
  Misses        669      669           
  Partials       89       89           

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[anishakj]

LGTM