Update git submodules

* Update docs/submodules/aai/aai-common.git from branch 'master'
  to 4217a7e143f7ddd464e156ff41244d2f92f23fb6
  - Update to 1.6.7-SNAPSHOT
    
    Issue-ID: AAI-2806
    Change-Id: I4b1f00e4e4b3cb576e76e03ba7e70d872b98e854
    Signed-off-by: Harish Venkata Kajur <vk250x@att.com>
    
diff --git a/docs/submodules/aai/aai-common.git b/docs/submodules/aai/aai-common.git
index 98749c4..4217a7e 160000
--- a/docs/submodules/aai/aai-common.git
+++ b/docs/submodules/aai/aai-common.git
@@ -1 +1 @@
-Subproject commit 98749c47bbb5f5ddcc1c4f0690b79c7288f6bdd6
+Subproject commit 4217a7e143f7ddd464e156ff41244d2f92f23fb6