Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to cfa48db5d059b891aa53cb52e512504860863bed
  - Remove old PNF simulator
    
    Issue-ID: INT-1517
    Signed-off-by: Bartosz Gardziejewski <bartosz.gardziejewski@nokia.com>
    Change-Id: I235b0fdf12b265a256c371126e218826e74a9133
    
1 file changed