Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "Bug fix for chrony configuration"
  - Bug fix for chrony configuration

    JIRA: -

    Set "security_ntp_servers" to use only one server;
    Correct the path of chrony key for centos deployment.

    Change-Id: I3050018fe07c51912e0b52a1c5c7ce2dd4d3f6ce
    Signed-off-by: Yifei Xue <xueyifei@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index aae5ff9..4074d39 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit aae5ff9e006cdaf910eee47d4c472360393f6e56
+Subproject commit 4074d39e93d7e7697dd2aaad2e08433ca0a60221