Automatic merge from submit-queue (batch tested with PRs 39152, 39142, 39055)

openstack: Forcibly detach an attached cinder volume before attaching elsewhere

Fixes #33288



**What this PR does / why we need it**:
Without this fix, we can't preemptively reschedule pods with persistent volumes to other hosts (for rebalancing or hardware failure recovery).

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #33288

**Special notes for your reviewer**:
(This is a resurrection/cleanup of PR #33734, originally authored by @Rotwang)

**Release note**: