Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Delete functest.utils.functest_logger"
  - Delete functest.utils.functest_logger

    It deletes functest.utils.functest_logger and the related unit tests.
    Then it modifies all functest modules to get all loggers via
    logging.getLogger(). __name__ is mainly used as getLogger arg as
    proposed by logging [1].

    All loggers and handlers are now defined via functest/ci/logging.ini
    instead of a dict loaded by an external json file.

    Now only warn messages and info messages from ci and core packages are
    printed in console.

    [1] https://docs.python.org/2/library/logging.html

    Change-Id: Ic192855e0f9bf94825d8f7ec73549a0f3b8d44c5
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>