Fix ugly labels caused by 96416e787d73a50eb27d4f5cf5ccb41b49458026

When the test method name is solely 'test()' the output is:
<issue> <className>.()

Consistently modified a few tests to use the generic name 'testit()'.
diff --git a/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5389LifecycleParticipantAfterSessionEnd.java b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5389LifecycleParticipantAfterSessionEnd.java
index ac32fd2..e0a5ea4 100644
--- a/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5389LifecycleParticipantAfterSessionEnd.java
+++ b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5389LifecycleParticipantAfterSessionEnd.java
@@ -31,7 +31,7 @@
         super( "[3.2.1,)" );
     }
 
-    public void test()
+    public void testit()
         throws Exception
     {
         File testDir =
diff --git a/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5669ReadPomsOnce.java b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5669ReadPomsOnce.java
index 26944d2..c2835f9 100644
--- a/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5669ReadPomsOnce.java
+++ b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5669ReadPomsOnce.java
@@ -45,7 +45,7 @@
         super( "[3.7.0,)" );
     }
 
-    public void test()
+    public void testit()
         throws Exception
     {
         // prepare JavaAgent
diff --git a/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5768CliExecutionIdTest.java b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5768CliExecutionIdTest.java
index 4fb29e8..b64d1fd 100644
--- a/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5768CliExecutionIdTest.java
+++ b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng5768CliExecutionIdTest.java
@@ -32,7 +32,7 @@
         super( "(3.2.5,)" );
     }
 
-    public void test()
+    public void testit()
         throws Exception
     {
         File testDir = ResourceExtractor.simpleExtractResources( getClass(), "/mng-5768-cli-execution-id" );