[COOK-3785] updated to include link to init script.
Raise an exception if the platform is not supported.
Merge branch 'cook-3811-unsupported-platform' into develop

Conflicts:
	recipes/default.rb
Add centos and amazon to redhat platform block.
Merge remote-tracking branch 'garrypolley/COOK-3785-rhel-for-supervisor' into develop
DRY up supervisord.init template for redhat, centos, and amazon.
Fix up attribution.