Update git submodules

* Update docs/submodules/appc.git from branch 'dublin'
  to 7155b808084ff6e49f6eef01ac7defd9a7754a3a
  - InventoryNames in ansible adapter fixed

    This change fixes support for InventoryNames parameter
    in LCM request going to Ansible server. Also ansible
    adapter DG has been modified to consider new parameter
    added

    Change-Id: I68aa8efa34b79ef2f669d81563510fea7bb0a730
    Signed-off-by: Lukasz Rajewski <lukasz.rajewski@orange.com>
    Issue-ID: APPC-1612

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 19004ea..7155b80 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 19004ea518572ba03c8969c7d2c0e2228ef2d86f
+Subproject commit 7155b808084ff6e49f6eef01ac7defd9a7754a3a