Update git submodules

* Update docs/submodules/ccsdk/distribution.git from branch 'master'
  to 0f4c96b5b6081efeecc73a748822a765cc38d62b
  - Update CCSDK dockers to use 0.5.2 artifacts
    
    Update CCSDK docker containers to use released 0.5.2 artifacts.
    
    Change-Id: If3bbb720caf1434bf7ab7802199889045eb68864
    Issue-ID: CCSDK-1401
    Signed-off-by: Timoney, Dan (dt5972) <dtimoney@att.com>
    
diff --git a/docs/submodules/ccsdk/distribution.git b/docs/submodules/ccsdk/distribution.git
index 458a85e..0f4c96b 160000
--- a/docs/submodules/ccsdk/distribution.git
+++ b/docs/submodules/ccsdk/distribution.git
@@ -1 +1 @@
-Subproject commit 458a85ec8dab60092a91208030ef2b31b3e545d2
+Subproject commit 0f4c96b5b6081efeecc73a748822a765cc38d62b