bitbake: fetch2: Ensure star character doesn't end up in mirror tarball names

bitbake: fetch2: Ensure star character doesn't end up in mirror tarball names

If '*' does end up in mirror urls accidently, some strange things
can break since supports_checksum() looks for this, ud.localpath can
then get ignored and this can lead to empty directories being downloaded
"successfully". '*' is a special case for file urls only at this point
so remove any entries that accidentlly make it in through url mapping.

(Bitbake rev: 1369bec2404d942acc3618a8d005ec6868dcfd41)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>