Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to f50399651e28e903cceaf4a0e1e31b55016c61c7
  - Merge "Update MSB docker images"
  - Update MSB docker images

    Update consul version to 1.4.3
    Update discovery version to 1.2.3
    Update api gateway version to 1.2.4

    Issue-ID: MSB-325, MSB-326
    Change-Id: I51bdbf783cb7a095f32f26cf738f959655ec44f3
    Signed-off-by: Huabing Zhao <zhaohuabing@gmail.com>

diff --git a/docs/submodules/oom.git b/docs/submodules/oom.git
index 458ab6a..f503996 160000 (submodule)
--- a/docs/submodules/oom.git
+++ b/docs/submodules/oom.git
@@ -1 +1 @@
-Subproject commit 458ab6a373ba68a147cf19d0f9c480150d9ec87c
+Subproject commit f50399651e28e903cceaf4a0e1e31b55016c61c7