Update git submodules

* Update docs/submodules/releng from branch 'master'
  - [QTIP] Enable qtip docker build image job in euphrates

    Change-Id: I01eb67919aa489c47d34976f9587f3187059d2b3
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 03d2c56..bf5f6a3 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 03d2c56fe3a43c69de91e0b97f90df10fc117319
+Subproject commit bf5f6a35fbd81757c27421ca7d424ed238efde2d