Map tar file to 'Directory' type

[ghost]

When running the BUSCO tool, error below occurs

Traceback (most recent call last):
  File "lib/galaxy/jobs/runners/__init__.py", line 214, in prepare_job
    job_wrapper.prepare()
  File "lib/galaxy/jobs/__init__.py", line 871, in prepare
    tool_evaluator.set_compute_environment(compute_environment, get_special=get_special)
  File "lib/galaxy/tools/evaluation.py", line 123, in set_compute_environment
    self.tool.exec_before_job(self.app, inp_data, out_data, param_dict)
  File "lib/galaxy/tools/__init__.py", line 2457, in exec_before_job
    cwl_command_line = cwl_job_proxy.command_line
  File "lib/galaxy/tools/cwl/parser.py", line 516, in command_line
    if self.is_command_line_job:
  File "lib/galaxy/tools/cwl/parser.py", line 428, in is_command_line_job
    self._ensure_cwl_job_initialized()
  File "lib/galaxy/tools/cwl/parser.py", line 452, in _ensure_cwl_job_initialized
    *args, **kwargs
  File "/home/jra001k/snapshot/galaxy/.venv/local/lib/python2.7/site-packages/cwltool/command_line_tool.py", line 342, in job
    builder = self._init_job(job_order, **kwargs)
  File "/home/jra001k/snapshot/galaxy/.venv/local/lib/python2.7/site-packages/cwltool/process.py", line 594, in _init_job
    raise WorkflowException("Invalid job input record:\n" + Text(e))
WorkflowException: Invalid job input record:
the `lineage` field is not valid because
  Expected class 'Directory' but this is 'File'

The two commits below fix this error:

a4b82fa

3399e03

(galaxy fork)

Note: this patch is a rewriting of a previous try, which should prevent regression in "Directory output test".