Strip out seed from reproduce method name

When -Dtests.iters is used the test seed is appended to the method name
by randomized runner. That in turn causes the reproduce line to contain
the seed as part of the method name, which makes the reproduce line
unuseable. This commit strips off any additional part of the method name
before printing.

Author: rjernst

server/src/test/java/org/elasticsearch/common/settings/SettingsTests.java

@@ -61,6 +61,7 @@ public void testReplacePropertiesPlaceholderSystemProperty() {
             .replacePropertyPlaceholders()
             .build();
         assertThat(settings.get("setting1"), equalTo(value));
+        fail("foo");
     }
 
     public void testReplacePropertiesPlaceholderSystemVariablesHaveNoEffect() {

test/framework/src/main/java/org/elasticsearch/test/junit/listeners/ReproduceInfoPrinter.java

@@ -77,8 +77,11 @@ public void testFailure(Failure failure) throws Exception {
         }
         b.append(failure.getDescription().getClassName());
 
-        final String methodName = failure.getDescription().getMethodName();
+        String methodName = failure.getDescription().getMethodName();
         if (methodName != null) {
+            // Method names only have spaces if used with -Dtests.iters where the seed is appended.
+            // Here we strip out anything from the first space, leaving the real method name intact.
+            methodName = methodName.split(" ")[0];
             // fallback to system property filter when tests contain "."
             if (methodName.contains(".") || isBwcTest) {
                 b.append("\" -Dtests.method=\"");