Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to 15f323ba83a990086e4aa0279370cd259a994c8d
  - Merge "bump multicloud services to 1.3.4"
  - bump multicloud services to 1.3.4

    bump multicloud-k8s image to 0.4.0

    Issue-ID: MULTICLOUD-641

    Signed-off-by: Liexiang Yue <yueliexiang@chinamobile.com>
    Change-Id: I14914e42426657bc40837b4d34b716f38c948465
    Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>

diff --git a/docs/submodules/oom.git b/docs/submodules/oom.git
index d7f4d8a..15f323b 160000 (submodule)
--- a/docs/submodules/oom.git
+++ b/docs/submodules/oom.git
@@ -1 +1 @@
-Subproject commit d7f4d8af83b2a0b38fae647bd5f1713575a2aded
+Subproject commit 15f323ba83a990086e4aa0279370cd259a994c8d