Update git submodules

* Update docs/submodules/releng from branch 'master'
  - [Dovetail] Edit the job's name of Dovetail on Fuel

    Change-Id: I6a2b571ca2696f9466a4588b7e4deef13b947eae
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 4cb31b2..7522eca 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 4cb31b2b027b53c3eb7b5f8a8a4b230687999543
+Subproject commit 7522eca3101d6d9bf3f98543ff61656b509a24d9