Addressed issues

Issues addressed in the MKE 3.8.17 release include:

• [FIELD-8356][MKE-14610] Fixed an issue wherein a failure to clean up the cgroup of a previous ucp-kubelet instance caused the ucp-kubelet container to enter a crash loop that persisted until the node was rebooted. The issue affected nodes that run cgroup v1. MKE now logs the cleanup failure as a warning and continues to start ucp-kubelet.