Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "Bug fix for the random failure of nova cell_v2 discovery"
  - Bug fix for the random failure of nova cell_v2 discovery

    JIRA: -

    Sometimes nova cell_v2 fails to discovery the compute
    hosts. So we add some retries to makr sure cell_v2
    discovery success.

    Change-Id: I74af78667f2718b10b8cbb1e9c7c8d8d3b4b297e
    Signed-off-by: Yifei Xue <xueyifei@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 58ca623..4f3401e 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 58ca623f89b9367c65ff07e01648c649ab64a5f2
+Subproject commit 4f3401e17a3a0ac2eb4bc7ab242b33f2ab6ff3e8