Update git submodules

* Update docs/submodules/policy/parent.git from branch 'master'
  to d3e39036e883385f1308d378ebe5e1179bfbc932
  - Add plugin for formatting
    
    Makes it easy from the command line to clean up whole submodules.
    Notably for policy/engine.
    
    Unfortunately we will have to copy the onap-java-formatter.xml to each
    project repo. Maven can't seem to find the file.
    
    Issue-ID: POLICY-2145
    Change-Id: Ic905be8c33fd89e3bd2be072d3670aad7a4fac2b
    Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
    
diff --git a/docs/submodules/policy/parent.git b/docs/submodules/policy/parent.git
index 36ad194..d3e3903 160000
--- a/docs/submodules/policy/parent.git
+++ b/docs/submodules/policy/parent.git
@@ -1 +1 @@
-Subproject commit 36ad194c41e7a0fb6adb0df707188147fdc232d0
+Subproject commit d3e39036e883385f1308d378ebe5e1179bfbc932