[fedora-upgrade/f21] Update fedora-upgrade to 21.3-1 Resolves: #1167079 - fedora-release-standard was renamed to fedora-r

[Miroslav Suchý]

Summary of changes:

  9659847... Update fedora-upgrade to 21.3-1 Resolves: #1167079 - fedora (*)

(*) This commit already existed in another branch; no separate mail sent