Add resizing support to CSI volumes

[gnufied]

Enhancement Description

• Add resizing support for CSI volumes:
• Kubernetes Enhancement Proposal PR: Start adding a KEP for csi volume resizing #780
• Kubernetes Enhancement Proposal: 20190129-csi-volume-resizing.md
• Primary contact (assignee): @gnufied
• Responsible SIGs: sig-storage
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y) 1.12
  • Beta release target (x.y) 1.16
  • Stable release target (x.y) 1.xx

[gnufied]

/assign

[gnufied]

/sig storage

[justaugustus]

/kind feature

[gnufied]

We should move this to 1.12. We still have CSI spec change under discussion.

[justaugustus]

@gnufied @kubernetes/sig-storage-feature-requests --

This feature was removed from the previous milestone, so we'd like to check in and see if there are any plans for this in Kubernetes 1.12.

If so, please ensure that this issue is up-to-date with ALL of the following information:

• One-line feature description (can be used as a release note):
• Primary contact (assignee):
• Responsible SIGs:
• Design proposal link (community repo):
• Link to e2e and/or unit tests:
• Reviewer(s) - (for LGTM) recommend having 2+ reviewers (at least one from code-area OWNERS file) agreed to review. Reviewers from multiple companies preferred:
• Approver (likely from SIG/area to which feature belongs):
• Feature target (which target equals to which milestone):
  • Alpha release target (x.y)
  • Beta release target (x.y)
  • Stable release target (x.y)

Set the following:

• Description
• Assignee(s)
• Labels:
  • stage/{alpha,beta,stable}
  • sig/*
  • kind/feature

Please note that the Features Freeze is July 31st, after which any incomplete Feature issues will require an Exception request to be accepted into the milestone.

In addition, please be aware of the following relevant deadlines:

• Docs deadline (open placeholder PRs): 8/21
• Test case freeze: 8/28

Please make sure all PRs for features have relevant release notes included as well.

Happy shipping!

/cc @justaugustus @kacole2 @robertsandoval @rajendar38

[gnufied]

This is still on target for 1.12. We are working on various aspects of code and specs to meet that goal.