Display red 'error' icon for Error state

- Display a red 'error' icon vs a yellow 'warning' icon when
  the Server Power is in an Error (Quiesced) state.

Resolves openbmc/openbmc#3149

Change-Id: I0d23d9406370e5b49d554b979aaedb5754601e3b
Signed-off-by: CamVan Nguyen <ctnguyen@us.ibm.com>
diff --git a/app/common/directives/app-header.html b/app/common/directives/app-header.html
index 887af51..5395d2a 100644
--- a/app/common/directives/app-header.html
+++ b/app/common/directives/app-header.html
@@ -18,7 +18,7 @@
 			<a href="#/server-health/event-log" class="header__server-health">Server health
 				<i class="icon icon-angle" aria-hidden="true"></i><span ng-class="{'status-light__error': dataService.server_health == 'Critical', 'status-light__warn': dataService.server_health == 'Warning', 'status-light__good': dataService.server_health == 'Good'}">{{dataService.server_health}}</span></a>
 			 <a href="#/server-control/power-operations" class="header__server-power" role="button">Server power
-				<i class="icon icon-angle" aria-hidden="true"></i><span ng-class="{'status-light__off': dataService.server_state == 'Off', 'status-light__disabled': dataService.server_state == 'Unreachable', 'status-light__good': dataService.server_state == 'Running', 'status-light__warn': dataService.server_state == 'Quiesced'}">{{dataService.server_state | quiescedToError}}</span></a>
+				<i class="icon icon-angle" aria-hidden="true"></i><span ng-class="{'status-light__off': dataService.server_state == 'Off', 'status-light__disabled': dataService.server_state == 'Unreachable', 'status-light__good': dataService.server_state == 'Running', 'status-light__error': dataService.server_state == 'Quiesced'}">{{dataService.server_state | quiescedToError}}</span></a>
 			<p class="header__refresh">Data last refreshed<span>{{dataService.last_updated |date:'h:mm:ss MMM dd yyyy'}}</span>
 			</p>
 			<button class="header__page-refresh" ng-click="refresh()" aria-label="refresh page data">