Automatic merge from submit-queue (batch tested with PRs 66577, 67948, 68001, 67982). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.

implement InstanceShutdownByProviderID to openstack

**What this PR does / why we need it**: without this openstack cannot get shutdown taint when instance is shutdown (original pr where this feature was added https://github.com/kubernetes/kubernetes/pull/60009)

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
Openstack supports now node shutdown taint. Taint is added when instance is shutdown in openstack.
```