Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 2289007753fab6d836b83022300c7b13cb782f37
  - Add minimal Vagrant environment development documentation
    
    Issue-ID: ONAPARC-551
    Change-Id: I1a6f6b998df755734a9c32fbe86473a72a45aae0
    Signed-off-by: Pawel Wieczorek <p.wieczorek2@samsung.com>
    
1 file changed