Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "Download OpenStack git repo from local server for CI"
  - Download OpenStack git repo from local server for CI

    JIRA: COMPASS-614

    Online git clone is heavily affected by the network
    condition of huawei lab. Download OpenStack git repo
    from local server to regain stability

    Change-Id: I92886b9c65068294f303d27de1b3b0261442af34
    Signed-off-by: Harry Huang <huangxiangyu5@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index cc71c86..850339f 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit cc71c866cb9880ac014bcf9a3ba52d579d8e5df2
+Subproject commit 850339f2760b19773becff054733a23f99523269