Update git submodules

* Update docs/submodules/policy/parent.git from branch 'master'
  to a687756e85ecb53513694278a656d510731518e2
  - Merge "Document Policy API to create operational policy for CDS actor"
  - Document Policy API to create operational policy for CDS actor

    - Restructured the development directory to include devtools,
      and actors

    Issue-ID: POLICY-2294
    Signed-off-by: Rashmi Pujar <rashmi.pujar@bell.ca>
    Change-Id: Ifdb1a9f3b8fa4a2ff34a7c8edf29783d2de803b7

diff --git a/docs/submodules/policy/parent.git b/docs/submodules/policy/parent.git
index 6ec1dbb..a687756 160000 (submodule)
--- a/docs/submodules/policy/parent.git
+++ b/docs/submodules/policy/parent.git
@@ -1 +1 @@
-Subproject commit 6ec1dbbcad20e10e7aae1dd026f45b6dc63bdc1d
+Subproject commit a687756e85ecb53513694278a656d510731518e2