Revert "Remove CephFS volume support from the Kubernetes provider #2613"

[BBBmau]

This reverts commit 317cfd1.

This reverts commit b3c0287.

This is meant for the major release of v3.0.0

Description

Acceptance tests

• Have you added an acceptance test for the functionality being added?
• Have you run the acceptance tests on this branch?

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccXXX'

...

Release Note

Release note for CHANGELOG:

...

References

Community Note

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