Add usage.read_units in fetch/query responses (#270)

## Problem

Need to update the generated core and surface usage data properly.

## Solution

- Make a few adjustments related to tag names in updated OpenAPISpec
- Update data integration tests to assert `read_units` are present
- Make adjustments to GRPC response parsing to account for the new data
attributes

## Type of Change

- [x] New feature (non-breaking change which adds functionality)

pinecone/control/index_host_store.py

@@ -1,6 +1,6 @@
 from typing import Dict
 from pinecone.config import Config
-from pinecone.core.client.api.manage_pod_indexes_api import ManagePodIndexesApi as IndexOperationsApi
+from pinecone.core.client.api.manage_indexes_api import ManageIndexesApi as IndexOperationsApi
 from pinecone.core.client.exceptions import PineconeException
 from pinecone.utils import normalize_host
 

pinecone/control/pinecone.py

@@ -5,7 +5,7 @@
 
 from pinecone.config import PineconeConfig, Config
 
-from pinecone.core.client.api.manage_pod_indexes_api import ManagePodIndexesApi as IndexOperationsApi
+from pinecone.core.client.api.manage_indexes_api import ManageIndexesApi as IndexOperationsApi
 from pinecone.core.client.api_client import ApiClient
 from pinecone.utils import get_user_agent
 from pinecone.core.client.models import (

pinecone/core/client/api/__init__.py

@@ -1,3 +1,3 @@
 # do not import all apis into this module because that uses a lot of memory and stack frames
 # if you need the ability to import all apis from one package, import them with
-# from pinecone.core.client.apis import ManagePodIndexesApi
+# from pinecone.core.client.apis import ManageIndexesApi

pinecone/core/client/api/manage_pod_indexes_api.py → pinecone/core/client/api/manage_indexes_api.py

@@ -31,7 +31,7 @@
 from pinecone.core.client.model.index_model import IndexModel
 
 
-class ManagePodIndexesApi(object):
+class ManageIndexesApi(object):
     """NOTE: This class is auto generated by OpenAPI Generator
     Ref: https://openapi-generator.tech