Updated git submodules

Project: policy/engine master 31e122b8c77b933db7475b2889efcfba83e378b5

Rename test classes in policy/engine

Make test classes name consitence by adding 'Test' at end of junit test classes and adding 'Support' or 'Dummy' at start of util or dummy type of test classes

Issue-ID: POLICY-1281
Change-Id: I5fa65d0cfc95edc8f2fe0ca678a43d2011a39670
Signed-off-by: Parshad Patel <pars.patel@samsung.com>

diff --git a/docs/submodules/policy/engine.git b/docs/submodules/policy/engine.git
index ffdaf10..31e122b 160000 (submodule)
--- a/docs/submodules/policy/engine.git
+++ b/docs/submodules/policy/engine.git
@@ -1 +1 @@
-Subproject commit ffdaf107b89321de081a4f122cf83393c196d769
+Subproject commit 31e122b8c77b933db7475b2889efcfba83e378b5