Update git submodules

* Update docs/submodules/compass4nfv from branch 'stable/euphrates'
  - add docker images tag

    Change-Id: I7705a085491a11e57edaf79b462b750818bedc8d
    Signed-off-by: wutianwei <wutianwei1@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 1cc2e21..97027ad 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 1cc2e21facebbb240860429659e2137fe37f5266
+Subproject commit 97027ad677f98d3301aa855814a1b7edd24f93af