IMGAPI-381: Fix ImagesList so cached.err callback can be called, improve cache handling for GetImage too
IMGAPI-381: Fix ImagesList so cached.err callback can be called, improve cache handling for GetImage too
joyent/sdc-imgapi,numericillustration/sdc-imgapi,joyent/sdc-imgapi,numericillustration/sdc-imgapi,joyent/sdc-imgapi,numericillustration/sdc-imgapi