AMBARI-9844. Alerts. "Ambari Agent Disk Usage" instances don't contain hostname (onechiporenko)

ambari-web/app/templates/common/modal_popups/alerts_popup.hbs

@@ -36,7 +36,13 @@
                       {{#if alertInstance.service.displayName}}
                          / 
                       {{/if}}
-                      <a {{action "goToHostAlerts" alertInstance.host target="view"}} href="#">{{alertInstance.host.hostName}}</a>
+                      <a {{action "goToHostAlerts" alertInstance.host target="view"}} href="#">
+                        {{#if alertInstance.host.hostName}}
+                          {{alertInstance.host.hostName}}
+                        {{else}}
+                          {{alertInstance.host.id}}
+                        {{/if}}
+                      </a>
                     {{/if}}
                   </div>
                   <div class="name-text">

ambari-web/app/templates/main/alerts/definition_details.hbs

@@ -194,8 +194,13 @@
                     {{#if instance.service.displayName}}
                        / 
                     {{/if}}
-                    <a {{action goToHostAlerts instance.host target="controller"}}
-                        href="#">{{instance.host.hostName}}</a>
+                    <a {{action goToHostAlerts instance.host target="controller"}} href="#">
+                      {{#if instance.host.hostName}}
+                      {{instance.host.hostName}}
+                    {{else}}
+                      {{instance.host.id}}
+                    {{/if}}
+                    </a>
                   {{/if}}
                 </td>
                 <td>{{{instance.status}}}
@@ -241,4 +246,4 @@
   </div>
 {{else}}
   <div class="spinner"></div>
-{{/if}}
+{{/if}}