corrected the path to test data file (not build dir but src dir).
this should fix the distcheck failure. also using this opportunity to add minor cleanups: use consistent naming for tests with function/file names. should be quite trivial and causing a buildbot error, so committing directly to trunk. git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@3861 e5f2f494-b856-4b98-b285-d166d9295462