Update git submodules

* Update docs/submodules/policy/engine.git from branch 'master'
  to 9347099fc35e87bc73a876d781102d4db8c0201e
  - Release engine 1.6.2 docker image
    
    Issue-ID: POLICY-2378
    Change-Id: I3dc21ac7d8a0883d886197c6a74632ecad440384
    Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
    
diff --git a/docs/submodules/policy/engine.git b/docs/submodules/policy/engine.git
index 99fad3e..9347099 160000
--- a/docs/submodules/policy/engine.git
+++ b/docs/submodules/policy/engine.git
@@ -1 +1 @@
-Subproject commit 99fad3e83f8282299e59077d8826362990c695a9
+Subproject commit 9347099fc35e87bc73a876d781102d4db8c0201e