Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "add a multus with 2 fannel interfaces installation"
  - add a multus with 2 fannel interfaces installation

    Support deploying multus multiple flannel CNI plugins by setting
    environment "kube_network_plugin" to "2flannel".

    Change-Id: I23a3d42452b4a5e0858a18934f508649f5961e7a
    Signed-off-by: Di Xu <di.xu@arm.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index c8d1b10..cfafdfa 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit c8d1b105be71eb831a7068c2b7d5e1530d590a11
+Subproject commit cfafdfa4bad20b380e542e6b2d4e240b2a931097