bumping version for 8.0.0
CHANGELOG updates for release
use mixlib-shellout 2.0 releas
add require resolv to work around missing constant issue in cvt testers
Merge pull request #443 from opscode/lcg/add-hacky-requre

add require resolv to work around missing constant issue in cvt testers
restrict to ruby >= 2.0.0 to match chef
Solve merge conflict
Merge remote branch 'opscode/master' into s390

Conflicts:
	CHANGELOG.md