Add below lines to your application Goals:(configure section of the application in jenkins)
cobertura:cobertura -Dcobertura.report.format=xml
pom.xml changes:
<reporting>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>cobertura-maven-plugin</artifactId>
<version>2.6</version>
<configuration>
<formats>
<format>html</format>
<format>xml</format>
</formats>
</configuration>
</plugin>
</plugins>