Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Modify the fuel deployment type judgement in fetch-os_creds.sh"
  - Modify the fuel deployment type judgement in fetch-os_creds.sh

    The BUILD_TAG on ZTE baremetal PODs don't include the word "baremetal".[1]
    Line 117 can't be correctly executed. Use a negative checking instead.

    [1] https://build.opnfv.org/ci/job/functest-fuel-zte-pod1-daily-master/206/injectedEnvVars/

    Change-Id: I1a36494768e0172bcf6a016fd8f2524854c9b876
    Signed-off-by: wu.zhihui <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f336990..323368a 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f336990e8804d33cd643a2bf5172a1d1730a46b8
+Subproject commit 323368adf57395f8cb3dab33d04bad453b433eb2