Fix the issue where runTest ignores arguments

### What changes are proposed in this pull request?

Fix the issue that TestRunner related parameters have no effect.

### Why are the changes needed?
Fix the issue that TestRunner related parameters have no effect. #17066

### Does this PR introduce any user facing changes?
no

pr-link: #17068
change-id: cid-2ae4ffc5ba0ba30c99da7247d92367028d22499b

shell/src/main/java/alluxio/cli/TestRunner.java

@@ -83,11 +83,12 @@ private TestRunner() {} // prevent instantiation
   /**
    * Console program that validates the configuration.
    *
-   * @param args there are no arguments needed
+   * @param args array of arguments given by the user's input from the terminal
    */
   public static void main(String[] args) throws Exception {
     TestRunner runner = new TestRunner();
     JCommander jCommander = new JCommander(runner);
+    jCommander.parse(args);
     jCommander.setProgramName("TestRunner");
     if (runner.mHelp) {
       jCommander.usage();