Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "xci: Create periodic osa jobs to find working version"
  - xci: Create periodic osa jobs to find working version

    These jobs run periodically against the HEAD of master and stable/ocata
    branches in order to attempt deployment and help us to find more
    recent working versions to pin.

    In perfect world, these jobs should be run post-merge, helping us
    to move faster but lack of resources prevent us doing that.

    One thing to note here is that we use the pinned version of bifrost
    in order to make sure we change one thing at a time to reduce the
    delta.

    Change-Id: Ieaff7e80581c7577b253b3646ca386313295a45a
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index a5a7e0f..85ec79c 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit a5a7e0f1f133aa64c62f7f34cb4f972a20b9a6f8
+Subproject commit 85ec79c7b6ac21c0d8e6a2910246c2d5d38ad981