infra/buildbot: Add initial RPM check builders

* master.cfg: Add an initial RPM rpm check builders, to run rpmlint and
  rpmbuild tests on builders with "pkg" == "rpm".
  some issues in buildbot (least on F24):
  - RpmLint doesn't get imported, have to run manually.
  - RpmBuild always sets 'dist', it shouldn't really. urg.
  - RpmBuild 'rpmdir' argument doesn't get Interpolated, so can't
    put the built RPMs cleanly into a distinct directory.

  When fixed, can auto-publish RPMs. For now, just check.
1 file changed