Update git submodules

* Update docs/submodules/policy/apex-pdp.git from branch 'master'
  to 8a5e150732258a2bb0a402c35e398b39c65a207c
  - Updating the supportedPolicyTypes in config files

    Changing the supportedPolicyTypes in apex-pdp configuration files
    to "onap.policies.controlloop.operational.Apex"

    Change-Id: Ie92d5284fbd80da48318ce7863471876ccb380bb
    Issue-ID: POLICY-1632
    Signed-off-by: a.sreekumar <ajith.sreekumar@est.tech>

diff --git a/docs/submodules/policy/apex-pdp.git b/docs/submodules/policy/apex-pdp.git
index b267849..8a5e150 160000 (submodule)
--- a/docs/submodules/policy/apex-pdp.git
+++ b/docs/submodules/policy/apex-pdp.git
@@ -1 +1 @@
-Subproject commit b267849e414baddb1c14a4be29fc06d9703ed944
+Subproject commit 8a5e150732258a2bb0a402c35e398b39c65a207c