bf28fdfe90
The checks for V-51379 didn't apply for Ubuntu and they were unintentionally skipped in CentOS after the multi-distro work was completed. This patch adds a search for unlabeled device files on CentOS 7 systems and halts the playbook if an unlabeled device is found. This is a very rare occurrence. Documentation updates and release notes are provided. Closes-bug: 1584196 Change-Id: Iba4be3bc5fa607685e3b4eeefda35f93894c7f28