Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Set OpenContrail role to optional

    JIRA: COMPASS-602

    OpenContrail is not installed in every Kubernetes
    scenario. Set this role to optional to avoid deploy
    failure.

    Change-Id: Iafa0c817e87b44509e96549fcda892380b1c5586
    Signed-off-by: Harry Huang <huangxiangyu5@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 44f6ab7..b8fe5ee 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 44f6ab71b61756b04eae25fe1e93cb502f4e1f84
+Subproject commit b8fe5eef450224a1346faff33c796d260e64fe36