Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: Fix functest docker tag passing for gate

    The daily job moved to using the apex-functest-scenario script. This
    updates the gate jobs to use the same logic as well as updates the
    detection script to drop snapshot specific extensions like functest/csit
    which Apex uses to determine special deploy types.

    Change-Id: Id5f23d71401fc341c640b388f583b304b2ac6789
    Signed-off-by: Tim Rozet <trozet@redhat.com>