Updated Integration model to use bookshelf relations (#9995)
Updated Integration model to use bookshelf relations (#9995)

refs #9865 

We use bookshelf relations so that we can create api_key relations easily.
JohnONolan/Ghost,kevinansfield/Ghost,bitjson/Ghost,bitjson/Ghost,janvt/Ghost,ErisDS/Ghost,Kikobeats/Ghost,kevinansfield/Ghost,JohnONolan/Ghost,e10/Ghost,Gargol/Ghost,Kikobeats/Ghost,TryGhost/Ghost,TryGhost/Ghost,ErisDS/Ghost,ErisDS/Ghost,janvt/Ghost,Gargol/Ghost,e10/Ghost,JohnONolan/Ghost,Kikobeats/Ghost,kevinansfield/Ghost,TryGhost/Ghost