Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Avoid cloning repos

    It inits the repos and fetch the required tags/ids/branches.
    All tags are fetched to meet pbr requirements.

    Change-Id: I0accd8ad04b93d63857e301dea11af69e0edf957
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a71167e..5448462 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a71167e6348475085f97a64392690ec2032e16b2
+Subproject commit 5448462d7aa342c752196bb8ac17598d98a32088