Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Publish framework presentation"
  - Publish framework presentation

    This is the first version prepared before merging "Switch TestCase
    attribute criteria to result" [1].
    It will also be updated to integrate VNF classes as soon as they are
    ready (UT, pylint, docstrings...).

    [1] https://gerrit.opnfv.org/gerrit/#/c/33695/

    Change-Id: I2fc8f4ae377afee70e083cd51e5725eccda15431
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>