Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 13de1c66eb55333e18d552ccd4fdde30dd06ad02
  - Setup Python linters in tox
    
    This adds Python linting setup that'll be triggered
    by relevant CI job for any uploaded python script review.
    
    Change-Id: I957156e281e97a05651e806f6418a7c450e20b43
    Issue-ID: INT-1427
    Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
    
1 file changed