Updates to spdx_id_to_rpmspec.py

[dvershinin]

This file spdx_id_to_rpmspec.py contains the mapping between GitHub's spdx_id to Fedora approved short license names.

It will be used when updating a .spec file and automatically filling out the proper License: tag for a release.

Currently, it includes only a fraction of all licenses.

[Nightfurex]

Hey can you please tell me what other tags need to added

[dvershinin]

@Nightfurex basically need to create a sensible mapping from this table's "Identifier" column to this table's "Short Name" column, so e.g. updated file should be like so:

# Maps SPDX ID from https://spdx.org/licenses/
# to corresponding short name license as recommended by Fedora
# https://fedoraproject.org/wiki/Licensing:Main?rd=Licensing#Good_Licenses
rpmspec_licenses = {
   'Apache-2.0': 'APSL 2.0',
   'BSD-2-Clause': 'BSD',
   'MIT': 'MIT',
   # new lines example
   'AFL-1.1': 'AFL',
   'AFL-1.2': 'AFL',
   'Beerware': 'Beerware',
}

So for every SPDX "Identifier" that "exists" in the Fedora Short names list, the mapping should be added to that short name.