Adds a maven pom for the rackspace examples.
Run: mvn clean test -Dusername=username -Dapikey=key
https://issues.apache.org/jira/browse/JCLOUDS-48
Update all license headers
https://issues.apache.org/jira/browse/JCLOUDS-65
JCLOUDS-80. Inherit apache-rat plugin config.
JCLOUDS-66. Update Maven project metadata for ASF.
JCLOUDS-31. License header cleanup