update to chef spec 4.1.0
update chef dependency for chefspec 4.1.0
remove deprecated chefspec server require
update chefspec runnner usage to ServerRunner
move data bag creation into chef_run block
relax constraint on chef version [ci skip]
bump to chef spec 4.1.1, see sethvargo/chefspec#504
@sethvargo is awesome!
Merge pull request #45 from bkw/chefspec-4.1.0

update to chefspec 4.1.1