Fix TypeError in dodola.cli.py::rechunk

[brews]

Get this when running the new dodola rechunk:

dc6-dev-djdj6-3755863106: Traceback (most recent call last):
dc6-dev-djdj6-3755863106:   File "/opt/conda/bin/dodola", line 33, in <module>
dc6-dev-djdj6-3755863106:     sys.exit(load_entry_point('dodola', 'console_scripts', 'dodola')())
dc6-dev-djdj6-3755863106:   File "/opt/conda/lib/python3.8/site-packages/click/core.py", line 829, in __call__
dc6-dev-djdj6-3755863106:     return self.main(*args, **kwargs)
dc6-dev-djdj6-3755863106:   File "/opt/conda/lib/python3.8/site-packages/click/core.py", line 782, in main
dc6-dev-djdj6-3755863106:     rv = self.invoke(ctx)
dc6-dev-djdj6-3755863106:   File "/opt/conda/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
dc6-dev-djdj6-3755863106:     return _process_result(sub_ctx.command.invoke(sub_ctx))
dc6-dev-djdj6-3755863106:   File "/opt/conda/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
dc6-dev-djdj6-3755863106:     return ctx.invoke(self.callback, **ctx.params)
dc6-dev-djdj6-3755863106:   File "/opt/conda/lib/python3.8/site-packages/click/core.py", line 610, in invoke
dc6-dev-djdj6-3755863106:     return callback(*args, **kwargs)
dc6-dev-djdj6-3755863106: TypeError: rechunk() missing 2 required positional arguments: 'variable' and 'maxmemory'

In PR #60, looks like we failed to properly connect/reconnect the CLI inputs and dodola.services.rechunk (again). Should consider testing for this if this becomes more and more common.

[brews]

@dgergel I screwed up connecting the CLI with dodola.service.rechunk again. I'm hoping this will be a quick fix. Would you please review/double check this fix once you have a second?

[dgergel]

@brews this fix looks good to me. I didn't check the rest of the code from #60 but I'm assuming you tested this already.

[brews]

That's great! Thanks, @dgergel.

Merging.