distro/f30: rework in the same way as RHEL8.2

The produced pipelines are unchanged.

Signed-off-by: Tom Gundersen <teg@jklm.no>

internal/rpmmd/repository.go

@@ -19,6 +19,7 @@ type RepoConfig struct {
 	Metalink   string `json:"metalink,omitempty"`
 	MirrorList string `json:"mirrorlist,omitempty"`
 	Checksum   string `json:"checksum,omitempty"`
+	GPGKey     string `json:"gpgkey,omitempty"`
 }
 
 type PackageList []Package