Update git submodules

* Update docs/submodules/aaf/authz.git from branch 'master'
  to 2831ca63cbbb94cf00cfd6640abb9f93cf422af9
  - fix gitignore in this dir, Part 1
    
    Issue-ID: AAF-980
    Change-Id: I6dd51b165026aacc88a8409b70221c5e9baeb6b5
    Signed-off-by: Instrumental <jonathan.gathman@att.com>
    
diff --git a/docs/submodules/aaf/authz.git b/docs/submodules/aaf/authz.git
index 4fde06b..2831ca6 160000
--- a/docs/submodules/aaf/authz.git
+++ b/docs/submodules/aaf/authz.git
@@ -1 +1 @@
-Subproject commit 4fde06b24f52a3d3fccc84ef36c19831fc0bef8d
+Subproject commit 2831ca63cbbb94cf00cfd6640abb9f93cf422af9