Update git submodules

* Update docs/submodules/aai/aai-common.git from branch 'master'
  to e72835a7bb6568f3320f3e437ce054fea2804ae4
  - Merge "Fix sonar issues in Aggregate"
  - Fix sonar issues in Aggregate

    - check obj.isPresent() in method processInput
    - return Optional.empty instead of null in method createPropertiesObject

    Issue-ID: AAI-2934
    Signed-off-by: Rodrigo Lima <rodrigo.lima@yoppworks.com>
    Change-Id: Iebe0184ce39f244dd56e6861617cbf4e5dafb06c

diff --git a/docs/submodules/aai/aai-common.git b/docs/submodules/aai/aai-common.git
index 273d54c..e72835a 160000 (submodule)
--- a/docs/submodules/aai/aai-common.git
+++ b/docs/submodules/aai/aai-common.git
@@ -1 +1 @@
-Subproject commit 273d54c0277aff18e1b4e14e53adbd51bac67e8d
+Subproject commit e72835a7bb6568f3320f3e437ce054fea2804ae4