bitbake: cooker: add support for using % as a wildcard in bbappend filename

bitbake: cooker: add support for using % as a wildcard in bbappend filename

There has been a continuing call for supporting wildcard in bbappend
filenames. The wildcard is actually allow matching of the name and
version up to the point of encountering the %.  This approach will
allow for matching of the major or major.minor.

Exampes:

busybox_1.21.1.bb
busybox_1.21.%.bbappend will match
busybox_1.2%.bbappend will also match

if we update to busybox_1.3.0.bb the above won't match, but a busybox_1.%.bb
will.

[YOCTO #5411]

(Bitbake rev: 31bc9af9cd56e7b318924869970e850993fafc5f)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>