Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Disable functest for xci until xci is ready"
  - Disable functest for xci until xci is ready

    The external network, docker installation and other parts need
    to be fixed in OPNFV host before functest can be enabled.

    Change-Id: I42a3adf2e36f91e6425d49e2578003b52ca4f101
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 10cb276..a8e3451 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 10cb2762a27db3dfedac88525328bc74c5bae8a3
+Subproject commit a8e3451b433586b477fbe2eb939848bf97a430f4