We only consider mirror tarballs when the source and target urls are of
differing types. We also should clear all url paramters when handling
mirror tarballs.
(From Poky rev: da140b8b0b3dda5429f9eee68829ef5247cdfe12)
(Bitbake rev: 7619dcad29a6c2405b15a8fbadfa11e81b399ae1)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>