Add runtimeClassName support to vanilla helm chart

[dnskr]

Description

The PR adds runtimeClassName support to vanilla helm chart.

Motivation and Context

The PR closes #15217 issue and related to #14854 discussion.

How to test this PR?

helm template test . --debug
# There is no runtimeClassName in the output

helm template test . --set runtimeClassName=qwerty --debug
# There is runtimeClassName in the output
# ...
# spec:
#   runtimeClassName: "qwerty"
# ...

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Optimization (provides speedup with no functional changes)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• Fixes a regression (If yes, please add commit-id or PR # here)
• Documentation updated
• Unit tests added/updated

[minio-trusted]

Mint Automation

Test	Result
mint-large-bucket.sh	✔️
mint-fs.sh	✔️
mint-gateway-s3.sh	✔️
mint-erasure.sh	✔️
mint-dist-erasure.sh	✔️
mint-compress-encrypt-dist-erasure.sh	✔️
mint-pools.sh	✔️
Deleting image on docker hub
Deleting image locally