Update git submodules

* Update docs/submodules/aai/aai-common.git from branch 'master'
  to 55228282b74da3ee98619fbb4604d0f21a75cf4c
  - Merge "Created maven modules for aai-common docker images."
  - Created maven modules for aai-common docker images.

    aai-common and aai-haproxy docker images can be build with maven.

    Change-Id: Iffbc2f4984316e3acc35558bdde0dbea76388ada
    Issue-ID: INT-1023
    Signed-off-by: Dmitry Puzikov <dmitry.puzikov@tieto.com>

diff --git a/docs/submodules/aai/aai-common.git b/docs/submodules/aai/aai-common.git
index b6169d1..5522828 160000 (submodule)
--- a/docs/submodules/aai/aai-common.git
+++ b/docs/submodules/aai/aai-common.git
@@ -1 +1 @@
-Subproject commit b6169d1ab53f9264a181fef03be77fcd2bf02976
+Subproject commit 55228282b74da3ee98619fbb4604d0f21a75cf4c