SCT feature related changes

[rajendraindukuri]

Description

SCT feature implementation

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#876

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
• Backward compatibility is not broken

How Has This Been Tested?

Tested creation of storage capacity objects and also tried provisioning a pod with a volume size greater than available free space. It works fine as expected:
Storage capacity objects

** Creating a pod with size greater than the available free space**