NO-ISSUE: Fix email domain for event uploader (#5511)

Email domain was set to Unknown by default for
clusters. This modifies the check for that and
ensures it's set to an actual email domain for
on-prem event uploading.

internal/uploader/auth_utils.go

@@ -1,7 +1,6 @@
 package uploader
 
 import (
-	"net/mail"
 	"strings"
 
 	"github.com/openshift/assisted-service/internal/cluster/validations"
@@ -51,11 +50,7 @@ func getOCMPullSecret(k8sclient k8sclient.K8SClient) (string, bool) {
 }
 
 func getEmailDomain(email string) string {
-	addr, err := mail.ParseAddress(email)
-	if err != nil {
-		return ""
-	}
-	parts := strings.Split(addr.Address, "@")
+	parts := strings.Split(email, "@")
 	if len(parts) < 2 {
 		return ""
 	}

internal/uploader/events_uploader.go

@@ -183,7 +183,7 @@ func eventsFile(ctx context.Context, clusterID *strfmt.UUID, eventsHandler event
 func clusterFile(tw *tar.Writer, cluster *common.Cluster, pullSecret *validations.PullSecretCreds) error {
 	if cluster != nil && cluster.ID != nil {
 		// To distinguish who is uploading the data
-		if cluster.EmailDomain == "" {
+		if cluster.EmailDomain == "" || cluster.EmailDomain == "Unknown" {
 			cluster.EmailDomain = getEmailDomain(pullSecret.Email)
 		}
 		if cluster.UserName == "" {