Removed unused st2web from logrotate. Also consolidated audit log rotations
Removed unused st2web from logrotate. Also consolidated audit log rotations

StackStorm/st2,Plexxi/st2,Plexxi/st2,Plexxi/st2,StackStorm/st2,StackStorm/st2,nzlosh/st2,nzlosh/st2,nzlosh/st2,nzlosh/st2,StackStorm/st2,Plexxi/st2