[#128] only load plugins necessary for envirionment
Merge pull request #134 from coryb/issue-128

[#128] only load plugins necessary for envirionment
prepare for release 1.2.165-dev
Move chef out of base aminator code
Merge pull request #136 from bunjiboys/hackathon

Move chef out of base aminator code
prepare for release 1.2.166-dev
Merge branch 'testing' of github.com:Netflix/aminator into mtripoli-plugin-refactor