Re-add Gentoo support
cleanup resultant whitespace and key/value alignment in config files
cleanup resultant whitespace and key/value alignment in config files
 - fix tests related to whitespace changes
nits
switch from Modulefile to metadata.json
Merge pull request #452 from 3flex/419-move-to-metadata-json

(maint) switch from Modulefile to metadata.json
Merge pull request #443 from rabbitt/whitespace-cleanup

cleanup whitespace and key/value alignment in config files
Fix to detect the major release version for redhat/centos 7
Merge pull request #454 from francis826/redhat_operatingsystemmajrelease

Fix to detect the major release version for redhat/centos 7
Merge pull request #440 from ad-notam/master

Re-add Gentoo support