v3.2.1

What's Changed

Cherry-pick changes from:

• XIONE-7775: Handle containers that don't respond to SIGKILL during cleanup #173
• XIONE-7775: Fix cleanup loop with multiple containers #174
• Fix spurious error messages #175

to the release 3.1 branch as part of ticket XIONE-7775

Full Changelog: v3.2.0...v3.2.1