Update git submodules

Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to 63307ec8c80e82d9763d48f6497940bdcabde404
  - Merge "[SDC] Change default access mode for cert PVC"
  - [SDC] Change default access mode for cert PVC

    sdc-onboarding-be PVC is currently using ReadOnlyMany mode. Unfortunately,
    this mode is not well supported.
    As this PVC is used only by sdc-onboarding-be pod, we can move to
    ReadWriteOnce, which is well supported

    Issue-ID: SDC-2549
    Issue-ID: OOM-1227
    Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
    Change-Id: Icc33d5d04cbdec846dbb1d609d52f0426b91483e