Re-enabling revdep tests in ci

CI won't be skipping revdep tests if sync.profile has an empty string
as a branch.

Task-number: QTQAINFRA-614
Change-Id: If255c8752bd3ed9aee2ccbcbfb18c5e4c4880746
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>