Align Cinder-plugin Helm Chart Labels with recommended ones by K8s.

[jonitich]

What this PR does / why we need it: Aligning labels to Kubernetes standard ones. https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/#labels.

Which issue this PR fixes(if applicable):
fixes #

Special notes for reviewers:

Release note:

NONE

[linux-foundation-easycla]

• ✅login: jonitich / (268dd08)

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[jonitich]

/cc @dulek, @kayrus

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[mnaser]

The concern I have with this is that this would have to be a major release bump, due to the fact that mismatching labels will make it so things cannot deploy anymore.

[jonitich]

The concern I have with this is that this would have to be a major release bump, due to the fact that mismatching labels will make it so things cannot deploy anymore.

hi @mnaser, yes indeed, changing those labels will make a rollout restart of the pods due to pod labels' immutability.