Add thread name to resource delta log entry in model tests

See: eclipse-jdt#2716

Author: trancexpress

org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/model/AbstractJavaModelTests.java

@@ -4219,6 +4219,9 @@ protected static void logDeltaEvent(IResourceChangeEvent event) {
 		StringBuilder s = new StringBuilder();
 		s.append("Logging resource change event");
 		s.append(System.lineSeparator());
+		s.append("thread: ");
+		s.append(Thread.currentThread().getName());
+		s.append(System.lineSeparator());
 		s.append("type: ");
 		s.append(event.getType());
 		s.append(System.lineSeparator());