OM-UI: Display user-friendly snapshot status text

Change-Id: Ib0ad12109d4398416f5617ad96bfaca8fa3200e7

Author: jojochuang

hadoop-ozone/ozone-manager/src/main/resources/webapps/ozoneManager/om-snapshots.html

@@ -54,7 +54,9 @@ <h1>Snapshots</h1>
     <tbody>
     <tr ng-repeat="snapshot in $ctrl.snapshots">
         <td>{{snapshot.name}}</td>
-        <td title="{{snapshot.snapshotStatus === 'SNAPSHOT_ACTIVE' ? 'active' : 'deletion in progress'}}">{{snapshot.snapshotStatus}}</td>
+        <td title="{{snapshot.snapshotStatus === 'SNAPSHOT_ACTIVE' ? 'active' : 'deletion in progress'}}">
+            {{snapshot.snapshotStatus === 'SNAPSHOT_ACTIVE' ? 'active' : 'deletion in progress'}}
+        </td>
         <td>{{snapshot.creationTime | date:'yyyy-MM-dd HH:mm:ss'}}</td>
         <td>{{$ctrl.formatBytes(snapshot.referencedSize)}}</td>
         <td>{{$ctrl.formatBytes(snapshot.exclusiveSize)}}</td>