changes for primary fs removal

[hemalathagajendran]

Primary fs/fset dependency removal from CSI.

Please check the type of change your PR introduces:

• Bugfix
• Feature Enhancement
• Test Automation
• Code Refactoring (no functional changes, no api changes)
• Build related changes
• Community Operator listing
• Other (please describe):

What is the current behavior?

• Primary fs/fset dependency for volume creation and other operations

What is the new behavior?

• Primary fs/fset dependency removed for volume creation and other operations

How risky is this change?

• Small, isolated change
• Medium, requires regression testing
• Large, requires functional and regression testing