Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 62f7418c1ceee4dd213eb04d63d3bafecb9d0a72
  - Bump pnfsimulator to 4.0.0-SNAPSHOT
    
    Change-Id: I955e2befdcb95a2b50fa3c3ba0d5a734d85fd753
    Issue-ID: INT-821
    Signed-off-by: Marcin Migdal <marcin.migdal@nokia.com>
    Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
    
1 file changed