[history server][e2e] Add Azure Blob Storage E2E test for History Server

[ikchifo]

Search before asking

• I had searched in the issues and found no similar feature requirement.

Description

Add an E2E test and example configuration for the History Server with Azure Blob Storage backend. This is a follow-up to #4413 which added Azure Blob Storage support for the Collector.

Proposed Changes

1. Config: Add historyserver/config/historyserver-azureblob.yaml - History Server deployment configured for Azure Blob Storage

2. E2E Test: Add historyserver/test/e2e/historyserver_azureblob_test.go - E2E test for live clusters using Azure

3. Support Functions: Add ApplyAzureHistoryServer() and PrepareAzureHistoryServerTestEnv() to historyserver/test/support/azureblob.go

4. Documentation: Update historyserver/docs/README.md to reference the new config file

Use case

Users running Ray on Azure Kubernetes Service (AKS) need an example showing how to configure the History Server to read from Azure Blob Storage, along with E2E test coverage.

Related issues

• [history server][storage] Add Azure Blob Storage support #4413 - [history server][storage] Add Azure Blob Storage support
• [Epic][Feature] Support History Server #3966 - [Epic][Feature] Support History Server

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

[ikchifo]

/assign

cc: @Future-Outlier