Dsnap is not using Pacu supplied region when running ebs__download_snapshots

[DaveYesland]

It seems dsnap is not using the region supplied in Pacu. This will probably need to be fixed in dsnap but noting it here as it causes errors in Pacu.

I receive the error below when running run ebs__download_snapshots --region us-west-2 even though the snapshot does exist in that region.

Changing my default region to the correct one in ~/.aws/config does fix it so that must be what Dsnap is using.

  File "/home/place/dev/pacu/pacu/main.py", line 1892, in run_gui
    self.idle()
  File "/home/place/dev/pacu/pacu/main.py", line 1746, in idle
    self.parse_command(command)
  File "/home/place/dev/pacu/pacu/main.py", line 628, in parse_command
    self.parse_exec_module_command(command)
  File "/home/place/dev/pacu/pacu/main.py", line 820, in parse_exec_module_command
    self.exec_module(command)
  File "/home/place/dev/pacu/pacu/main.py", line 1037, in exec_module
    summary_data = module.main(command[2:], self)
  File "/home/place/dev/pacu/pacu/modules/ebs__download_snapshots/main.py", line 91, in main
    snap.fetch()
  File "/home/place/.cache/pypoetry/virtualenvs/pacu-lFZSkJZE-py3.9/lib/python3.9/site-packages/dsnap/snapshot.py", line 174, in fetch
    self.get_blocks()
  File "/home/place/.cache/pypoetry/virtualenvs/pacu-lFZSkJZE-py3.9/lib/python3.9/site-packages/dsnap/snapshot.py", line 93, in get_blocks
    for block in self._get_blocks():
  File "/home/place/.cache/pypoetry/virtualenvs/pacu-lFZSkJZE-py3.9/lib/python3.9/site-packages/dsnap/snapshot.py", line 98, in _get_blocks
    print(self.ebs)
  File "/home/place/.cache/pypoetry/virtualenvs/pacu-lFZSkJZE-py3.9/lib/python3.9/site-packages/botocore/client.py", line 535, in _api_call
    return self._make_api_call(operation_name, kwargs)
  File "/home/place/.cache/pypoetry/virtualenvs/pacu-lFZSkJZE-py3.9/lib/python3.9/site-packages/botocore/client.py", line 980, in _make_api_call
    raise error_class(parsed_response, operation_name)
<class 'botocore.errorfactory.ResourceNotFoundException'>: An error occurred (ResourceNotFoundException) when calling the ListSnapshotBlocks operation: The snapshot 'snap-0560266e79971111' does not exist