Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "deploy/conf: separate x86 and AArch64 docker image naming"
  - deploy/conf: separate x86 and AArch64 docker image naming

    Latest update hard-coded some docker image names, which breaks
    the deployment on Arm platform. This patch fixes the issue by
    distinguishing docker image naming on different architecture.

    This is an interim solution, and in the future, we may leverage
    docker multi arch support to use consistent naming for
    different architectures.

    Change-Id: I5c59c12fb250c4e09d83582640e248075b5f7373
    Signed-off-by: Yibo Cai <yibo.cai@arm.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 4f3401e..4e9213e 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 4f3401e17a3a0ac2eb4bc7ab242b33f2ab6ff3e8
+Subproject commit 4e9213e2facda368233187c469e12b88f0a9de7a