updated powermax sample file and test files

[harishp8889]

Description

1. Updated e2e files by removing unused envs.
2. Updated CSM-Powermax sample files

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
https://github.com/dell/csm/issues/1566

Checklist:

• I have performed a self-review of my own code to ensure there are no formatting, vetting, linting, or security issues
• I have verified that new and existing unit tests pass locally with my changes
• I have not allowed coverage numbers to degenerate
• I have maintained at least 90% code coverage
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have maintained backward compatibility

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration

• Ran e2e and attached the screens

[nitesh3108]

remove X_CSI_POWERMAX_ENDPOINT from operatorconfig as well

[harishp8889]

remove X_CSI_POWERMAX_ENDPOINT from operatorconfig as well

Removed

[ChristianAtDell]

Merged main into this branch and addressed merge conflict, which should bring UT coverage up unless code was added and not tested in this branch.