Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to c8c612b74cf3599d36b66db4ef33302b45f3ff54
  - Fix for Ansible Healthcheck bug
    
    Update to directed graph and merge JSON template code
    
    Issue-ID: APPC-1472
    Change-Id: I4332ad74d34f455261b1c001339d0542be4514fc
    Signed-off-by: Joss Armstrong <joss.armstrong@ericsson.com>
    
diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index b45d452..c8c612b 160000
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit b45d4528f2c563cdff2e78837a4164deb4152283
+Subproject commit c8c612b74cf3599d36b66db4ef33302b45f3ff54