Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Fix DNS flush

    JIRA:-

    It doesn't need to config DNS in ansible roles, just need to
    set NAMESERVERS variable

    Change-Id: I37a70b32c766c1fad7afa5289ffbbc27b956b2d5
    Signed-off-by: chigang <chigang@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 06b95e3..d529e77 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 06b95e349cf3e6bc5d45b7030683d53eeae490ec
+Subproject commit d529e77a45c77c10ac6970ca9e733e92e89d138f