Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "cobbler: support aarch64"
  - cobbler: support aarch64

    Set ADAPTER_OS_PATTERN='(?i)CentOS-7.*arm.*' to deploy CentOS aarch64.

    Change-Id: I943e2edfc03b92446fb393c63c254ab8e3c37225
    Signed-off-by: Yibo Cai <yibo.cai@arm.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 5fc5b92..1af45fb 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 5fc5b9252d1bb18f1d9cecef00d5ce24117784e6
+Subproject commit 1af45fbc194814201a067fa040f37c3bc0f84b9c