I have done the standalone.xml change to include the scanner as below
<subsystem xmlns="urn:jboss:domain:deployment-scanner:1.1">
<deployment-scanner name="default" path="deployments" relative-to="jboss.server.base.dir" scan-enabled="true" scan-interval="0" auto-deploy-exploded="false" deployment-timeout="60"/>
</subsystem>
I have also included the jsp-configuration development="'true"
<subsystem xmlns="urn:jboss:domain:web:1.4" default-virtual-server="default-host" native="false">
<connector name="http" protocol="HTTP/1.1" scheme="http" socket-binding="http"/>
<configuration>
<jsp-configuration development="true"/>
</configuration>
<virtual-server name="default-host" enable-welcome-root="true">
<alias name="localhost"/>
<alias name="example.com"/>
</virtual-server>
</subsystem>
But still jsp changes are not reflecting. Can anybody please help me here.