Rename test class so it is run during build

benchmarks/src/test/java/nl/basjes/statistics/CounterTest.java → benchmarks/src/test/java/nl/basjes/statistics/TestCounter.java

@@ -22,7 +22,7 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
-public class CounterTest {
+public class TestCounter {
 
     private static final String  BAD_COUNT         = "Bad count";
     private static final String  BAD_MIN           = "Bad value for Min";