Changed visibility of static constants to 'package' to make them accessible from test case

src/main/java/kieker/analysis/plugin/filter/sink/ThreadsStatusDisplayFilter.java

@@ -31,10 +31,10 @@ import teetime.stage.basic.AbstractFilter;
  */
 public class ThreadsStatusDisplayFilter extends AbstractFilter<ThreadsStatusRecord> {
 
-	private static final String TOTAL_THREADS = "Total Threads";
-	private static final String THREADS = "Threads";
-	private static final String DAEMON_THREADS = "Daemon Threads";
-	private static final String PEAK_THREADS = "Peak Threads";
+	static final String TOTAL_THREADS = "Total Threads";
+	static final String THREADS = "Threads";
+	static final String DAEMON_THREADS = "Daemon Threads";
+	static final String PEAK_THREADS = "Peak Threads";
 
 	private final XYPlot xyplot;