Provide API call to get RPMs for an image

[vpavlin]

The only way to get RPMs in the image is to call imageinfo - we might want to introduce new API call

/v1/image/$IMAGEID/content

which would provide json object

{
rpm: [ $rpmlist ]
}

this would provide us generic way to report content when we add more non-rpm content types

[TomasTomecek]

+1
(and maybe remove rpm list from imageinfo)

How about getting logs and dockerfile? I feel like new api call for every one.