Comment 12 for bug 1618754

Submitter: Jenkins
Branch: master

commit ef818b7a31817971c84969e0907604a4acc11772
Author: Vladyslav Drok <email address hidden>
Date: Tue Dec 20 11:41:30 2016 +0200

    Forbid removing portgroup mode

    Mode can be left empty on creation, the value will be populated by
    the dbapi, but in case of updates, we should not allow removing it.

    Partial-Bug: #1618754
    Change-Id: I917b23bc155972b777b143d16545a49039604910