Fix do-like-javac to support testminimizer

[Ao-senXiong]

This #18 PR removed get_tool_command function and hence break the testminimizer functionality. Find a way to fix it.

  File "/home/axiong/test-minimizer/do-like-javac/do_like_javac/tools/testminimizer.py", line 366, in interesting
    exec_result = ToolRunningUtil.running_tool(self.tool_args, file_list, self.target_classpath, "file_set_minimization")
  File "/home/axiong/test-minimizer/do-like-javac/do_like_javac/tools/testminimizer.py", line 397, in running_tool
    tool_cmd = SUPPORT_TOOLS[args.debuggedTool].get_tool_command(args, target_classpath, file_list)
AttributeError: module 'do_like_javac.tools.check' has no attribute 'get_tool_command'