Update git submodules

* Update docs/submodules/sdc/sdc-docker-base.git from branch 'master'
  to c0e96b55b3b71a69d0cfe47908a2e5c0ee7e4bae
  - Upgrade to Cassandra 3
    
    Creating base dockers suitable for Cassandra 3
    
    Issue-ID: SDC-2594
    Signed-off-by: shrek2000 <oren.kleks@amdocs.com>
    Change-Id: I9e62cca2b7ef348bf68f28f74ec0a49c350f93e8
    Signed-off-by: shrek2000 <oren.kleks@amdocs.com>
    
diff --git a/docs/submodules/sdc/sdc-docker-base.git b/docs/submodules/sdc/sdc-docker-base.git
index 6cdcb85..c0e96b5 160000
--- a/docs/submodules/sdc/sdc-docker-base.git
+++ b/docs/submodules/sdc/sdc-docker-base.git
@@ -1 +1 @@
-Subproject commit 6cdcb857261019e1dbd154fe6f27a68b124cfb4a
+Subproject commit c0e96b55b3b71a69d0cfe47908a2e5c0ee7e4bae