Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to ff02910af1fc203e342e621dd4547d51f87e9e9f
  - Merge "[COMMON] Fix PV/PVC for postgres"
  - [COMMON] Fix PV/PVC for postgres

    When creating https://gerrit.onap.org/r/c/oom/+/99478, forgot to
    backport storage class part of https://gerrit.onap.org/r/c/oom/+/98962.

    Issue-ID: OOM-2234
    Issue-ID: OOM-1227
    Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
    Change-Id: I3c42b28ad5bea67eda004b0209c8a21783b539f1

diff --git a/docs/submodules/oom.git b/docs/submodules/oom.git
index 9c39401..ff02910 160000 (submodule)
--- a/docs/submodules/oom.git
+++ b/docs/submodules/oom.git
@@ -1 +1 @@
-Subproject commit 9c39401bac43746619482aee239b88db4d2d85e2
+Subproject commit ff02910af1fc203e342e621dd4547d51f87e9e9f