added missing check to verify content_type change
added missing check to verify content_type change

citrix-openstack-build/pecan,StackStorm/pecan,ryanpetrello/pecan,jdandrea/pecan,jimrollenhagen/pecan,citrix-openstack-build/pecan,jdandrea/pecan,StackStorm/pecan,ryanpetrello/pecan,pecan/pecan,pecan/pecan,jimrollenhagen/pecan