Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Define logger as Feature instance attribute"
  - Define logger as Feature instance attribute

    It allows any Feature subclass to print warning messages in console
    and debug messages in a dedicated file.

    Co-Authored-By: Cédric Ollivier <cedric.ollivier@orange.com>
    Change-Id: Ic5b1b1184c16cf50f0baadc3904075d0acdf3c6d
    Signed-off-by: Jose Lausuch <jose.lausuch@ericsson.com>
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>