The vSCSI physical volume may hit an issue if there is an hdisk without
a UDID. The connect flow handles this and will not map. Which then
causes a revert. However, during the revert the code tries to remove
the hdisk. This causes a significant issue.
This change set detects this path by adding a flag to check if udid is
None. If so, it presents a warning message to the operator. It then
allows the revert flow to continue properly.
Change-Id: If7af35c7e7b68f9a5cf5496fdfded482b45064e0
Closes-Bug: 1505388