spec: better %%license handling
spec: better %%license handling

main package doesn't need to include LICENSE as it
requires python[3]-osbs, which contains it

projectatomic/osbs-client,DBuildService/osbs-client,jpopelka/osbs-client,bfontecc007/osbs-client,vrutkovs/osbs-client,vrutkovs/osbs-client,pbabinca/osbs,bfontecc007/osbs-client,twaugh/osbs-client,TomasTomecek/osbs,projectatomic/osbs-client,TomasTomecek/osbs,DBuildService/osbs-client,twaugh/osbs-client,pombredanne/osbs-client,pbabinca/osbs,jpopelka/osbs-client,pombredanne/osbs-client