Bug 561040 - Migrate ant tests to JUnit 4

* Migrate test suite to JUnit4 style
* Adapt launch config to use junit4 launcher
* Use standard Eclipse Java formatter in project settings.

Change-Id: I96909efc5488e0c73acd491c0a2431402b7ede4e
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>