Hi Vinod,
This depends on the namespaces configured in module.xml for jax-rs and cxf.
For example, in $JBOSS_HOME/modules/org/apache/cxf/main/module.xml, the xmlns points to 'urn:jboss:module:1.1', then you would need to have the same in your jboss-deployment-structure.xml.
Like this, <jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.1">.
Can you please try this out and let me know the results ?