After a trunk VM has been migrated the trunk status remains
DOWN, After the parent port is back to active modify the trunk
status.
Closes-Bug: #1988549
Change-Id: Ia0f7a6e8510af2c3545993e0d0d4bb06a9b70b79
(cherry picked from commit 178ee6fd3d76802cd7f577ad3d0d190117e78962)