Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "[fuel] Add stable/fraser branch"
  - [fuel] Add stable/fraser branch

    Change-Id: Ieca49ab172046d22f421eb6adb6f238c38b8e2f1
    Signed-off-by: Delia Popescu <delia.popescu@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index b04a29d..fce5a62 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit b04a29d3eef0404ecc90b6d8be6dc621a91b9cf0
+Subproject commit fce5a62bdc0349711aab2042cadaf1ed3f41bee6