Update git submodules

* Update docs/submodules/compass4nfv from branch 'stable/euphrates'
  - Update the documents for compass E release

    JIRA: -

    1. Rewrite vm and bm deployment docs to satisfy the new release
    2. add some images for network architecture
    3. Update release name, version, etc.

    Change-Id: I1e9d305de5edf60d937868d49966c153d85fd2b5
    Signed-off-by: Yifei Xue <xueyifei@huawei.com>
    (cherry picked from commit 074eab95235e35431b0439e42d253d44b139004e)

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index b241c1a..0337ca2 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit b241c1a733e57556a524165c68c9b3cd0f8348b8
+Subproject commit 0337ca28259e0afe67778c778c1cc8697cd93cec