[NPANDAY-488] Use contentPath by default

This was the previous behaviour:
http://svn.apache.org/viewvc/incubator/npanday/trunk/plugins/msdeploy-maven-plugin/src/main/java/npanday/plugin/msdeploy/create/CreateContentPackageMojo.java?r1=1333788&r2=1332286&pathrev=1333788

Also, there is a problem using iisApp with resolve web roles, since it
expects the contentPath destination:
http://svn.apache.org/viewvc/incubator/npanday/trunk/plugins/msdeploy-maven-plugin/src/main/java/npanday/plugin/msdeploy/create/CreateContentPackageMojo.java?r1=1333788&r2=1332286&pathrev=1333788

git-svn-id: https://svn.apache.org/repos/asf/incubator/npanday/trunk@1573504 13f79535-47bb-0310-9956-ffa450edef68