allow circle API env overrides
allow circle API env overrides

pratikmallya/graphite,pratikmallya/graphite,rackspace-orchestration-templates/graphite,brint/graphite,rackspace-orchestration-templates/graphite,brint/graphite,rackspace-orchestration-templates/graphite,brint/graphite,brint/graphite,pratikmallya/graphite,brint/graphite,pratikmallya/graphite,rackspace-orchestration-templates/graphite,pratikmallya/graphite,rackspace-orchestration-templates/graphite