Fix host update for Xen and VMware

Author: BryanMLima

api/src/main/java/org/apache/cloudstack/api/response/HostResponse.java

@@ -875,6 +875,10 @@ public Boolean getInstanceConversionSupported() {
         return instanceConversionSupported;
     }
 
+    public String getGuestOsRule() {
+        return guestOsRule;
+    }
+
     public void setGuestOsRule(String guestOsRule) {
         this.guestOsRule = guestOsRule;
     }

ui/src/views/infra/HostUpdate.vue

@@ -125,7 +125,7 @@ export default {
   methods: {
     initForm () {
       this.formRef = ref()
-      const guestOsRule = this.resource.details['guest.os.rule']
+      const guestOsRule = this.resource?.guestosrule
       this.form = reactive({
         name: this.resource.name,
         hosttags: this.resource.explicithosttags,