Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Making docker deploy script generic"
  - Making docker deploy script generic

    Replacing words with variables to make docker deploy generic so that it can
    be availed by other modules.

    Change-Id: Iacf4829aa5feede48038b71155a4dab43a8d427d
    Signed-off-by: Sakala Venkata Krishna Rohit <rohitsakala@gmail.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 1bfef52..d70dde4 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 1bfef523c2abd5024e2ec95a2fec3262178d1949
+Subproject commit d70dde441c7afd4a1343fc02342b7478a9dadcd5