HEAD-1665: ensure that activating an image doesn't ignore 'disabled' value when setting 'state'
HEAD-1665: ensure that activating an image doesn't ignore 'disabled' value when setting 'state'

joyent/sdc-imgapi,numericillustration/sdc-imgapi,numericillustration/sdc-imgapi,numericillustration/sdc-imgapi,joyent/sdc-imgapi,joyent/sdc-imgapi