Update git submodules

* Update docs/submodules/compass4nfv from branch 'stable/euphrates'
  - Fix some hard coding for some ip assignments

    Change-Id: I13571914eb51fd0923bf025302dab46bae46ba9a
    Signed-off-by: Harry Huang <huangxiangyu5@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 10c1877..cb6aba5 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 10c1877374ac8eb2cfbbdf34daeb0049ea4dd67e
+Subproject commit cb6aba5b0d0fd689bb89b1c59d6383453e4a794d