Update git submodules

* Update docs/submodules/oom.git from branch 'master'
  to 878f0b2b010f9a83be6b9b68d7c3951d3e574db2
  - Merge "extend period of readiness probe"
  - extend period of readiness probe
    
    changed to:
    initialDelaySeconds: 300
    periodSeconds: 60
    
    Change-Id: Ic13238e886a8d01a93e2d4f4c7d6bc8f91b5cd09
    Issue-ID: APPC-1581
    Signed-off-by: Taka Cho <takamune.cho@att.com>
    
diff --git a/docs/submodules/oom.git b/docs/submodules/oom.git
index b9c9959..878f0b2 160000
--- a/docs/submodules/oom.git
+++ b/docs/submodules/oom.git
@@ -1 +1 @@
-Subproject commit b9c9959e777c35332e007b5e4c1d919c47291013
+Subproject commit 878f0b2b010f9a83be6b9b68d7c3951d3e574db2