Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Stop removing /src/openstack-requirements/.git"
  - Stop removing /src/openstack-requirements/.git

    Otherwise pip fails when it checks it again [1].

    [1] https://hub.docker.com/r/opnfv/functest-features/builds/b8ziypongh8eexgsatdpyhm/

    Change-Id: I973f41f8a8e757c01c9c17d57323c7e737b76741
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 1f3c5d1..9f0b067 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 1f3c5d14a1185bdff4dbc66b84d64e06f4626589
+Subproject commit 9f0b0675da1b8f4e6edb277492bf6b2f747721b8