Update git submodules

* Update docs/submodules/container4nfv from branch 'master'
  - reduce container4nfv job duration

    1. remove basic deployment
    2. change worker from 3 to 2

    Change-Id: I142f6f3c48bb96ecf48ea31c41e06389763b02e1
    Signed-off-by: Guo Ruijing <ruijing.guo@intel.com>

diff --git a/docs/submodules/container4nfv b/docs/submodules/container4nfv
index 9bf4a11..8702867 160000 (submodule)
--- a/docs/submodules/container4nfv
+++ b/docs/submodules/container4nfv
@@ -1 +1 @@
-Subproject commit 9bf4a114bea41b9ca7fb172ce9bf83283c72d36f
+Subproject commit 870286745312e2794712ee40c6afc9056929f803