Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to 89980a4583908910c18c05631aa22ece98e3f4c3
  - Merge "Addressed openstack override file missing requestDB endpoint"
  - Addressed openstack override file missing requestDB endpoint

    integration team reported that openstack is missing request db
    adapter endpoint from override file. This has been addressed here.

    Issue-ID: SO-2801
    Signed-off-by: Ramesh Parthasarathy(rp6768)<ramesh.parthasarathy@att.com>
    Change-Id: I1f67575fbea813587ec83c7ff88bc294c09eef71