Fix execution of terraform commands

[MiguelNdeCarvalho]

    ~/Documents/Customers/SMT/is-terraform-shermans    master  python /home/mike/Documents/Customers/AnguloSolido/terrabutler/run.py tf -site inception state list
Traceback (most recent call last):
  File "/home/mike/Documents/Customers/AnguloSolido/terrabutler/run.py", line 5, in <module>
    exit(main())
  File "/home/mike/.local/lib/python3.10/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "/home/mike/.local/lib/python3.10/site-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "/home/mike/.local/lib/python3.10/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/mike/.local/lib/python3.10/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/mike/.local/lib/python3.10/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/mike/.local/lib/python3.10/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/mike/.local/lib/python3.10/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "/home/mike/.local/lib/python3.10/site-packages/click/decorators.py", line 26, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/mike/Documents/Customers/AnguloSolido/terrabutler/terrabutler/click.py", line 688, in tf_state_list_cli
    terraform_command_runner("state list", args, "none", ctx.obj['SITE'])
  File "/home/mike/Documents/Customers/AnguloSolido/terrabutler/terrabutler/tf.py", line 92, in terraform_command_runner
    p = subprocess.Popen(args=command, cwd=site_dir)
  File "/usr/lib/python3.10/subprocess.py", line 966, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.10/subprocess.py", line 1775, in _execute_child
    self.pid = _posixsubprocess.fork_exec(
TypeError: expected str, bytes or os.PathLike object, not tuple