Be more specific when selecting source rpms for builddep

When building binary rpms (in build action), due to not specific enough
globbing, yum-builddep was run with all the files in corresponding
source repository directory, including 'repodata' directory if there was
one.

To fix that, we use more specific glob in binary.mk template.

Closes-Bug: #1212213
Change-Id: I84bcfa0a9883dbfbe966bd3890869b66f4ea5f57