Update git submodules

* Update docs/submodules/compass4nfv from branch 'stable/euphrates'
  - Fix missing default gateway issue

    Change-Id: Ic10709ca82a0d16af614ac327160f97a654d2280
    Signed-off-by: Harry Huang <huangxiangyu5@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 807c541..03346d4 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 807c5411c69e733bfee6a3c5880b989f291aec04
+Subproject commit 03346d4b1be34b3d1e0db69aa9eb86d4e858e42f