Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - fix yaml install

    move yaml install out of if block to
    install pyyaml whenever apt packages
    is installed

    Change-Id: Icbad66e0d8070afcb183c31af4759443bf0cf7f1
    Signed-off-by: Harry Huang <huangxiangyu5@huawei.com>

diff --git a/docs/submodules/compass4nfv b/docs/submodules/compass4nfv
index 074eab9..fb952b8 160000 (submodule)
--- a/docs/submodules/compass4nfv
+++ b/docs/submodules/compass4nfv
@@ -1 +1 @@
-Subproject commit 074eab95235e35431b0439e42d253d44b139004e
+Subproject commit fb952b8c4cb4a47ad33cf7f7c3a06b83954343a2