Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to b6584466e5aff8904241d8107baa722788a8e6a8
  - Merge "[COMMON] add pre upgrade script for mariadb-galera"
  - [COMMON] add pre upgrade script for mariadb-galera

    When upgrading from a version to another, it may be impossible to do it
    "simply" because of changes in immutable properties of statefulsets. We
    change that here by creating a temporary deployment which will hold the
    whole databases during the time the old statefulset gets destroyed and
    the new one gets created.

    Issue-ID: OOM-2316
    Signed-off-by: tringuyen <tri.nguyen@tatacommunications.com>
    Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
    Change-Id: I318d72830d5002f50597e23e0753e292f8b47c53

diff --git a/docs/submodules/oom.git b/docs/submodules/oom.git
index 34a250b..b658446 160000 (submodule)
--- a/docs/submodules/oom.git
+++ b/docs/submodules/oom.git
@@ -1 +1 @@
-Subproject commit 34a250b156a744e37e207d4572145cfd8f08c8d1
+Subproject commit b6584466e5aff8904241d8107baa722788a8e6a8