Updated git submodules

Project: policy/engine master 8287e34104ce634d2a20c5906ddb53a2a4fe6959

Upgrade elasticsearch v6.3.0

Resolves a security issue around information disclosure. The
recommendation is to upgrade to this version for the fix.

Issue-ID: POLICY-1063
Change-Id: Idebb19d2c530b716a25aa91832c053e6b2d0ffce
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>


diff --git a/docs/submodules/policy/engine.git b/docs/submodules/policy/engine.git
index a1a279f..8287e34 160000
--- a/docs/submodules/policy/engine.git
+++ b/docs/submodules/policy/engine.git
@@ -1 +1 @@
-Subproject commit a1a279f01734ba32f12b44186d6278dfebbf6385
+Subproject commit 8287e34104ce634d2a20c5906ddb53a2a4fe6959