obs-commit-version.sh: fix broken builds on OBS
obs-commit-version.sh: fix broken builds on OBS

- Fix tarball name pattern.
- Replace version in 'caf.dsc' too.
- Check if --nightly or --release option is given.

DavadDi/actor-framework,nq-ebaratte/actor-framework,actor-framework/actor-framework,nq-ebaratte/actor-framework,DavadDi/actor-framework,DavadDi/actor-framework,DavadDi/actor-framework,nq-ebaratte/actor-framework,1blankz7/actor-framework,1blankz7/actor-framework,1blankz7/actor-framework,actor-framework/actor-framework,actor-framework/actor-framework,actor-framework/actor-framework,nq-ebaratte/actor-framework,1blankz7/actor-framework