Updated git submodules

Project: policy/engine master e44a43f3dbb1dbaa182122f66961c55d3b96b824

Reduce technical debt

Mainly use StringBuilder() to improve speed

* Use StringBuilder
* Remove superflous exceptions in constructor
* Remove unnecessary casts
* Remove unnecessary toString()
* Combine return into one statement
* Move string literal to LHS

Issue-ID: POLICY-482
Change-Id: Id196728d92dda7fab7e83d6eea07633c5be37f7c
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>

diff --git a/docs/submodules/policy/engine.git b/docs/submodules/policy/engine.git
index a6b8bc8..e44a43f 160000 (submodule)
--- a/docs/submodules/policy/engine.git
+++ b/docs/submodules/policy/engine.git
@@ -1 +1 @@
-Subproject commit a6b8bc8875402ab721a8529926d01b2565d0f595
+Subproject commit e44a43f3dbb1dbaa182122f66961c55d3b96b824