Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - fix the lz4 packages dependence

    1. install pkgconfig
    2. mv the tasks of fixing pip issue out of the main script

    Change-Id: Icc08a3c461690d1d6747455479df0a58d87d22da
    Signed-off-by: wutianwei <wutianwei1@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index a360411..84f36e9 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit a360411cb8c775dffa24a4157cec2b566cbde6f3
+Subproject commit 84f36e9f062c056cbb8ee15c94c4cc208dbc7766