sdk-py should be able to connect to different networks

[aaitor]

No description provided.

[jcortejoso]

The problem seems related how the network name for the artifacts are determined:

This is an example for mumbai, where artifacts have mumbai as network name (coming from truffle config) and sdk-py is looking for them as development in this case.

2021-08-26 08:19:49,955 - nevermined_gateway.myapp - ERROR - Exception on / [GET]
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/flask/app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
...
  File "/nevermined-gateway/nevermined_gateway/run.py", line 43, in root_info
    keeper = keeper_instance()
  File "/nevermined-gateway/nevermined_gateway/util.py", line 239, in keeper_instance
    return Keeper.get_instance(external_contracts=external_contracts)
  File "/usr/local/lib/python3.8/site-packages/contracts_lib_py/keeper.py", line 140, in get_instance
    return Keeper(artifacts_path, contract_names, external_contracts)
  File "/usr/local/lib/python3.8/site-packages/contracts_lib_py/keeper.py", line 85, in __init__
    self.did_registry = DIDRegistry.get_instance()
  File "/usr/local/lib/python3.8/site-packages/contracts_lib_py/contract_base.py", line 46, in get_instance
    return cls(cls.CONTRACT_NAME, dependencies)
  File "/usr/local/lib/python3.8/site-packages/contracts_lib_py/contract_base.py", line 33, in __init__
    self.contract = dependencies['ContractHandler'].get(contract_name)
  File "/usr/local/lib/python3.8/site-packages/contracts_lib_py/contract_handler.py", line 32, in get
    return (ContractHandler._contracts.get(name) or ContractHandler._load(name))[0]
  File "/usr/local/lib/python3.8/site-packages/contracts_lib_py/contract_handler.py", line 83, in _load
    contract_definition = ContractHandler.get_contract_dict_by_name(
  File "/usr/local/lib/python3.8/site-packages/contracts_lib_py/contract_handler.py", line 138, in get_contract_dict_by_name
    raise FileNotFoundError(
FileNotFoundError: Keeper contract DIDRegistry file not found in /usr/local/artifacts using network name development