AMBARI-12879. Warn the user about HDFS Upgrade not finalized in Ambari Web UI (onechiporenko)

ambari-web/app/templates/application.hbs

@@ -142,7 +142,7 @@
                 </a>
                 </p>
                 {{#if App.router.mainAdminStackAndUpgradeController.isFinalizeItem}}
-                  <p class="span10 alert alert-warning">{{t admin.stackVersions.version.upgrade.notFinalized.warning}}</p>
+                  <p class="span10 alert alert-danger">{{t admin.stackVersions.version.upgrade.notFinalized.warning}}</p>
                 {{/if}}
               {{/if}}
             </div>