Update git submodules

* Update docs/submodules/policy/engine.git from branch 'master'
  to 8b3940418dcb0969ab5edb896a26371cbbe5d769
  - Fix for Policy editor GUI issue.
    
    Issue-ID: POLICY-2492
    Change-Id: Ic436a72d321c9aeed1a7eeec57c6dfc44819d6cc
    Signed-off-by: uj426b <uj426b@att.com>
    
1 file changed