Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Disable orchestra_* testcases"
  - Disable orchestra_* testcases

    They can be simply disabled and they unsuccessfully run vs Daily only.

    In a second step, moving the related python modules in a new
    orchestra repository could be a good solution simply because they
    don't reach our coding criteria.

    The best way is still to update them according to our rules and to
    check all installers thanks to these two vnfs.

    Change-Id: If36b16f0ed95d7039db9455a32c18f7fd1a739ef
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>