Netapp ontap template cache support within storage pool scope

[rajiv-jain-netapp]

This PR supports

1. creation of local cache template with in the scope of storage pool while creating instance.
2. for the first VM create, template would be created for template if not available in the storage-pool scope
3. It would work for both NFS3 and iSCSI protcols.
4. for the subsequent VM create, local template would be utilized and it would help in turn-around-time to create an instance.

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• Build/CI
• Test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[rajiv-jain-netapp]

@DaanHoogland @nvazquez FYI

[rajiv-jain-netapp]

@blueorangutan package