Fix errors noted by checkstyle when building Tomcat 7:
- Added missing license header in a test class
- Imports order
It is backport of r1613803 from tomcat/trunk.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1613804 13f79535-47bb-0310-9956-ffa450edef68