Fix clobber from commit 0998a277f40f09166a43c0972f68fa50372b7bdc

Above commit had incorrectly clobbered getting uuid directly from subnet_vnc
Restore earlier behavior getting uuid from subnet_vnc

Change-Id: If3f1960035b526ad47a80672464dbd7b0f184d71
Merge "Fix clobber from commit 0998a277f40f09166a43c0972f68fa50372b7bdc"