Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "xci: Exclude aodh, ceilometer, and gnocchi from deployments"
  - xci: Exclude aodh, ceilometer, and gnocchi from deployments

    Aodh is broken on the master branch due to use of conflicting
    sqlAlhcemy package, causing issues during osa repo_build.

    This patch disables aodh and the related services ceilometer
    and gnocchi since the reason for us to have these 2 is to get
    aodh.

    See the failure from
    https://build.opnfv.org/ci/job/xci-deploy-virtual-xenial-daily-master/26/consoleFull

    Change-Id: Ic6b74328cf1692b5e26c5f30b3eb3799240c7117
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index ebfcb06..f5ec287 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit ebfcb06123168dd9cfaa1de5b382a19d978c1c2d
+Subproject commit f5ec2879c9dc8025b6838259345f2e381d84728e