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/server-control/styles/power-operations.scss b/app/server-control/styles/power-operations.scss
index add4ff3..cb2e190 100644
--- a/app/server-control/styles/power-operations.scss
+++ b/app/server-control/styles/power-operations.scss
@@ -76,6 +76,16 @@
         }
       }
     }
+    &.power__state-error {
+      background-position: 0;
+      color: $black;
+      .power__state {
+        span:before {
+          content: '';
+          @extend .icon__critical;
+        }
+      }
+    }
   }
 
   // Power button options
@@ -100,4 +110,4 @@
     }
   }
 
-} //end power-operations
\ No newline at end of file
+} //end power-operations