Update python-apipkg to version 3.0.2 / rev 12 via SR 1116439
https://build.opensuse.org/request/show/1116439
by user dirkmueller + anag+factory
- update to 3.0.2:
* Fix import path to make it vendoring-friendly
* remove py reference from tests
- switch to gh tarball to get tests again
- refresh pytest4.patch for pytest5
- Converted to single-spec