rpm fedora: use systemd base package instead of systemd-units subpackage
rpm fedora: use systemd base package instead of systemd-units subpackage

In recent fedora, the systemd-units subpackage has been merged into the base package.

hiroyuki-sato/groonga,myokoym/groonga,redfigure/groonga,cosmo0920/groonga,naoa/groonga,myokoym/groonga,redfigure/groonga,kenhys/groonga,kenhys/groonga,kenhys/groonga,myokoym/groonga,redfigure/groonga,myokoym/groonga,naoa/groonga,naoa/groonga,myokoym/groonga,kenhys/groonga,komainu8/groonga,redfigure/groonga,groonga/groonga,cosmo0920/groonga,cosmo0920/groonga,groonga/groonga,groonga/groonga,cosmo0920/groonga,naoa/groonga,cosmo0920/groonga,kenhys/groonga,groonga/groonga,komainu8/groonga,hiroyuki-sato/groonga,redfigure/groonga,naoa/groonga,myokoym/groonga,komainu8/groonga,hiroyuki-sato/groonga,komainu8/groonga,redfigure/groonga,kenhys/groonga,komainu8/groonga,redfigure/groonga,cosmo0920/groonga,myokoym/groonga,cosmo0920/groonga,komainu8/groonga,hiroyuki-sato/groonga,hiroyuki-sato/groonga,cosmo0920/groonga,groonga/groonga,komainu8/groonga,groonga/groonga,naoa/groonga,kenhys/groonga,hiroyuki-sato/groonga,groonga/groonga,hiroyuki-sato/groonga,redfigure/groonga,naoa/groonga,naoa/groonga,groonga/groonga,komainu8/groonga,myokoym/groonga,hiroyuki-sato/groonga,kenhys/groonga