Support arbitrary registration URL

Add support for `operatingSystem.packages.sccRegistrationUrl` to allow
for registration against an RMT/SMT/SUMA.

pkg/image/definition.go

@@ -127,6 +127,7 @@ type Packages struct {
 	PKGList         []string  `yaml:"packageList"`
 	AdditionalRepos []AddRepo `yaml:"additionalRepos"`
 	RegCode         string    `yaml:"sccRegistrationCode"`
+	RegUrl          string    `yaml:"sccRegistrationUrl"`
 }
 
 type AddRepo struct {

pkg/rpm/resolver/resolver.go

@@ -182,6 +182,7 @@ func (r *Resolver) prepareLocalRPMs(localRPMConfig *image.LocalRPMConfig) error
 func (r *Resolver) writeRPMResolutionScript(localRPMConfig *image.LocalRPMConfig, packages *image.Packages) error {
 	values := struct {
 		RegCode      string
+		RegUrl       string
 		AddRepo      []image.AddRepo
 		CacheDir     string
 		PKGList      string
@@ -191,6 +192,7 @@ func (r *Resolver) writeRPMResolutionScript(localRPMConfig *image.LocalRPMConfig
 		Arch         string
 	}{
 		RegCode:    packages.RegCode,
+		RegUrl:     packages.RegUrl,
 		AddRepo:    packages.AdditionalRepos,
 		CacheDir:   r.generateResolverImgRPMRepoPath(),
 		NoGPGCheck: packages.NoGPGCheck,

pkg/rpm/resolver/templates/rpm-resolution.sh.tpl

@@ -12,7 +12,7 @@ set -euo pipefail
 #  Arch         - sets the architecture of the rpm packages to pull
 
 {{ if ne .RegCode "" }}
-suseconnect -r {{ .RegCode }}
+suseconnect -r {{ .RegCode }} {{- with .RegUrl }} --url "{{ . }}" {{- end }}
 zypper ref
 trap "suseconnect -d" EXIT
 {{ end -}}