Check licenses of dependencies #663
Description
Apparently, the openstack-image-manager uses a library for extracting archives, namely patool, which is under GPLv3. As far as I understand, the image manager then is regarded as a work derived from patool and therefore has to be distributed under GPL as well. Right now, however, it is distributed under Apache v2.
I think patool is easily replaced if necessary. I haven't checked any other dependencies though.