Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 7629cefc3a6f08b1253f58bf70dfb745992281c2
  - Merge "Revert "Disable CNTT jobs""
  - Revert "Disable CNTT jobs"

    This reverts commit 41a16d7f0fd608bd7e342a844a1bf9b21e8dba6a.

    Reason for revert: Airship deployment error was fixed so restart the cntt gate after discussing with Cedric.

    Change-Id: Ib6b251cfd87235ad15ed1d2ecd168ae5b082933e
    Signed-off-by: James Gu <james.gu@att.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9c1e0a7..7629cef 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9c1e0a7e7e635218d3b71521d1cfadc9ea037ca5
+Subproject commit 7629cefc3a6f08b1253f58bf70dfb745992281c2