Update git submodules

* Update docs/submodules/policy/engine.git from branch 'master'
  to 8f0c0524afb0ebedf5a11a3b68e4624c8168d716
  - Remove deletion of POLICY_HOME/etc/ssl
    
    To match work from:
    https://gerrit.onap.org/r/#/c/policy/docker/+/101758/
    
    Issue-ID: POLICY-2181
    Signed-off-by: jhh <jorge.hernandez-herrero@att.com>
    Change-Id: I1f83508d7edd97337ee746cc09aff94bee684817
    
diff --git a/docs/submodules/policy/engine.git b/docs/submodules/policy/engine.git
index 5fb8f6c..8f0c052 160000
--- a/docs/submodules/policy/engine.git
+++ b/docs/submodules/policy/engine.git
@@ -1 +1 @@
-Subproject commit 5fb8f6c0eb94e6bee6795f2dbdc33bce854f64bc
+Subproject commit 8f0c0524afb0ebedf5a11a3b68e4624c8168d716