COOK-356, extend runit_service w/ env support
COOK-356, extend runit_service w/ env support

* with parameter :env to support environment variables for runit services

hw-cookbooks/runit,cwjohnston/runit,Altiscale/runit,ai-traders/runit,Demandbase/db-runit,NickLaMuro/runit,zendesk/runit,zuazo-forks/hw-cookbooks-runit,cwjohnston/runit,boldfield/runit,NickLaMuro/runit,wk8/runit,NickLaMuro/runit,Demandbase/db-runit,cookbooks/hw-runit,hw-cookbooks/runit,Altiscale/runit,cookbooks/oc-runit,Demandbase/db-runit,ai-traders/runit,dialoghq/runit,hw-cookbooks/runit,7bfa689ac3c4be50f8ba6c1ea8c5f316/runit,wk8/runit,boldfield/runit,jkeiser/runit,dagolden/runit,jkeiser/runit,7bfa689ac3c4be50f8ba6c1ea8c5f316/runit,cwjohnston/runit,ai-traders/runit,jkeiser/runit,7bfa689ac3c4be50f8ba6c1ea8c5f316/runit,wk8/runit,shopping-adventure/chef_runit,boldfield/runit,Altiscale/runit