internal/distro: rhel7 repo customizations

Wire up the repository customizations for
rhel7 images.

internal/distro/rhel7/distro.go

@@ -558,6 +558,12 @@ func (t *imageType) checkOptions(customizations *blueprint.Customizations, optio
 		return warnings, err
 	}
 
+	// check if repository customizations are valid
+	_, err = customizations.GetRepositories()
+	if err != nil {
+		return warnings, err
+	}
+
 	return warnings, nil
 }
 

internal/distro/rhel7/images.go

@@ -156,6 +156,36 @@ func osCustomizations(
 		// should have been validated before this point.
 		panic(fmt.Sprintf("failed to convert file customizations to fs node files: %v", err))
 	}
+
+	// set yum repos first, so it doesn't get overridden by
+	// imageConfig.YUMRepos
+	osc.YUMRepos = imageConfig.YUMRepos
+
+	customRepos, err := c.GetRepositories()
+	if err != nil {
+		// This shouldn't happen and since the repos
+		// should have already been validated
+		panic(fmt.Sprintf("failed to get custom repos: %v", err))
+	}
+
+	// This function returns a map of filename and corresponding yum repos
+	// and a list of fs node files for the inline gpg keys so we can save
+	// them to disk. This step also swaps the inline gpg key with the path
+	// to the file in the os file tree
+	yumRepos, gpgKeyFiles, err := blueprint.RepoCustomizationsToRepoConfigAndGPGKeyFiles(customRepos)
+	if err != nil {
+		panic(fmt.Sprintf("failed to convert inline gpgkeys to fs node files: %v", err))
+	}
+
+	// add the gpg key files to the list of files to be added to the tree
+	if len(gpgKeyFiles) > 0 {
+		osc.Files = append(osc.Files, gpgKeyFiles...)
+	}
+
+	for filename, repos := range yumRepos {
+		osc.YUMRepos = append(osc.YUMRepos, osbuild.NewYumReposStageOptions(filename, repos))
+	}
+
 	osc.ShellInit = imageConfig.ShellInit
 
 	osc.Grub2Config = imageConfig.Grub2Config
@@ -173,7 +203,6 @@ func osCustomizations(
 	osc.Sysctld = imageConfig.Sysctld
 	osc.DNFConfig = imageConfig.DNFConfig
 	osc.DNFAutomaticConfig = imageConfig.DNFAutomaticConfig
-	osc.YUMRepos = imageConfig.YUMRepos
 	osc.YUMConfig = imageConfig.YumConfig
 	osc.SshdConfig = imageConfig.SshdConfig
 	osc.AuthConfig = imageConfig.Authconfig