Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "Fix ovs version used in odl scenario"
  - Fix ovs version used in odl scenario

    JIRA: -

    Use openvswitch 2.8.0

    Change-Id: Ic2cc504543908141b14a2253e5edb67ca68d5299
    Signed-off-by: Harry Huang <huangxiangyu5@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index ba78078..2d3669c 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit ba78078b28e60455fe6f0975e3a85578b6ec30d3
+Subproject commit 2d3669c5f9f0c2149f783ae60cda74b65b0eb1be