KNOX-3095:Added HBase UI proxying for Startup progress (#989)

Co-authored-by: dhingu <dhingu@cloudera.com>

Author: hingu-8103

gateway-service-definitions/src/main/resources/services/hbaseui/2.1.0/rewrite.xml

@@ -144,6 +144,9 @@
   <rule dir="OUT" name="HBASEUI/hbase/outbound/master/children" pattern="/namedQueueLog.jsp?{**}">
     <rewrite template="{$frontend[url]}/hbase/webui/master/namedQueueLog.jsp?host={$inboundurl[host]}?port={$inboundurl[port]}?{**}"/>
   </rule>
+  <rule dir="OUT" name="HBASEUI/hbase/outbound/master/children" pattern="/startupProgress.jsp?{**}">
+    <rewrite template="{$frontend[url]}/hbase/webui/master/startupProgress.jsp?host={$inboundurl[host]}?port={$inboundurl[port]}?{**}"/>
+  </rule>
 
   <!-- RegionServer UI proxying -->
   <rule dir="IN" name="HBASEUI/hbase/inbound/regionserver/root/qualified" pattern="*://*:*/**/hbase/webui/regionserver?{host}?port}">