Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 415f6a848acdeee17ca2321fb890fc335a9f3f77
  - Go back to 12 x 16 GB k8s VMs
    
    Change-Id: I22804fbb20ebe707773928ba08abe2e122f0d3e1
    Issue-ID: INT-993
    Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
    
diff --git a/docs/submodules/integration.git b/docs/submodules/integration.git
index e2e9177..415f6a8 160000
--- a/docs/submodules/integration.git
+++ b/docs/submodules/integration.git
@@ -1 +1 @@
-Subproject commit e2e917706a2e0e725e52dc6e25efa70f7438f97a
+Subproject commit 415f6a848acdeee17ca2321fb890fc335a9f3f77