Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "[Functest] Remove Colorado and Brahmaputra support"
  - [Functest] Remove Colorado and Brahmaputra support

    CI no longer runs brahmaputra and colorado jobs.
    To keep the jobs as simple as possible, remove
    that support.

    Change-Id: I29661f414923807dc6c0d22526dc852a45dbe7bb
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 937dd2f..a495738 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 937dd2fe36ca5115836a32f78af24adde136e32d
+Subproject commit a495738171484faa8248bb6c12cfde0c1d123ff3