Support mountPath replacing variable references with the values of given EnvVar

[dongjiang1989]

Enhancement Description

• One-line enhancement description (can be used as a release note): Support mountPath replacing variable references with the values of given EnvVar
• Kubernetes Enhancement Proposal:
• Discussion Link: feat(kubelet): support mountPath replacing variable references with the values of given EnvVar kubernetes#125587 (comment)
• Primary contact (assignee): @dongjiang1989
• Responsible SIGs: sig/node
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y): 1.32
  • Beta release target (x.y):
  • Stable release target (x.y):
• Alpha
  • KEP (k/enhancements) update PR(s): KEP-4788: Support mountPath replacing variable references with the values of given EnvVar #4820
  • Code (k/k) update PR(s):
  • Docs (k/website) update PR(s):

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

[dongjiang1989]

/sig node

[kannon92]

Please create a KEP PR if you want to work on this for 1.32.

[dongjiang1989]

Please create a KEP PR if you want to work on this for 1.32.

Thanks. @kannon92 PTAL