Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to e781c7c4e4e385f504254d0fd32f534d559af3c2
  - Mass PNF-sim unique VSFTPD PASV ports
    
    Issue-ID: DCAEGEN2-1660
    Change-Id: Ib742755f6a924ee9c5babe8e411311e7fe0e6802
    Signed-off-by: TamasBakai <tamas.bakai@est.tech>
    
1 file changed