[local-path-provisioner] Update and build from source

[kvaps]

Description

This PR:

• updating local-path-provisioner 0.0.20 --> 0.0.21
• enables building from source code
• and applies patch from Do not create directory if not found rancher/local-path-provisioner#224

Why we need it and what problem does it solve?

There is known problem rancher/local-path-provisioner#137 which was confirmed by maintainer. It was fixed by me about year ago but then reverted due to silly problem on maintainers side.

I do not give up hope that it will be united one time, as for now I suggest the permanent fix on our side.

Changelog entries

module: local-path-provisioner
type: fix
description: "Update local-path-provisioner v0.0.21, include fix"
note: |
  Protect PVs to be reused in case of unmounted storage.

[kvaps]

PR rebased