Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Make synchronous Shade calls

    It makes difficult to find the issues (floating ip, boot, ssh
    connection, etc...) for a small benefit regarding the current
    testcase implementations.

    It increases the default floating ip timeout because it has been
    reached when running Functest multiple times in parallel. It may
    be the root cause when running singlevm vs XCI (in that case,
    neutron api and agents are hosted in a nested vm).

    Change-Id: Ia97e04902321644c207c59987283754318aee5e5
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>