Updated git submodules

Project: aaa master 9926c82ba23fe3475376c69261e4177067cce67f

BUG-6341: use common Cassandra and Coda Hale Metrics

This depends on https://git.opendaylight.org/gerrit/43717

This patch pulls in the odlparent-defined version of Netty; this is
currently compatible with the Cassandra driver, and future upgrades
will have to bear this in mind.

Change-Id: I4401553b2e529045bf6f9e19ea8c763834f43210
Signed-off-by: Stephen Kitt <skitt@redhat.com>

diff --git a/docs/submodules/aaa b/docs/submodules/aaa
index 43caa2e08d468994a699f910ac4cd415ab8db00c..9926c82ba23fe3475376c69261e4177067cce67f 160000 (submodule)
--- a/docs/submodules/aaa
+++ b/docs/submodules/aaa
@@ -1 +1 @@
-Subproject commit 43caa2e08d468994a699f910ac4cd415ab8db00c
+Subproject commit 9926c82ba23fe3475376c69261e4177067cce67f