Update git submodules

* Update docs/submodules/compass4nfv from branch 'stable/danube'
  - Revert "opera adapter fix2"

    * opera_adapter need sshpass which may cause deploy
    fail
    * compass log redirection is the last command which
    always return 0 and thus cover deploy error

    1. add installation of sshpass in prepare.sh
    2. echo a string at the end of deploy/launch.sh into
    log file to judge if deployment is complete
    3. fix typing error in util/check_valid.py

    Change-Id: Ifa57faed29e1055a35ab0e24b0026b520f395807
    Signed-off-by: Justin chi <chigang@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index fb5c383..b52dade 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit fb5c383c7d88f27c5dcea3b4b1920ffd612cae2e
+Subproject commit b52dade4c2d8ee662f22893c9527196e0074b20d