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>
    
diff --git a/docs/submodules/policy/engine.git b/docs/submodules/policy/engine.git
index b7bdab1..8b39404 160000
--- a/docs/submodules/policy/engine.git
+++ b/docs/submodules/policy/engine.git
@@ -1 +1 @@
-Subproject commit b7bdab1bba58bc0fd2738128fbaf19441047366f
+Subproject commit 8b3940418dcb0969ab5edb896a26371cbbe5d769