Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Correct proxy configuration for VNF VM"
  - Correct proxy configuration for VNF VM

    The configuration of proxy for apt is missing in ubuntu images.
    Line Feed is missing in cloudify conf files.

    Change-Id: I3237b914e993c57f4fe3ed568690d2d9a41c0bdf
    Signed-off-by: Thierry ALLENO <thierry.alleno@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 5d54a53..488d974 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 5d54a533d25a989dc64a2789788ff2f2fd6ad5c6
+Subproject commit 488d974effc817840fd8a4a332c6e9679f6b3639