Fix Tumor Dataset importer

2021-09-24 10:00:53,084 - ERROR [proc:65776]  - tvb.core.services.operation_service - Could not launch Operation with the given input data!
Traceback (most recent call last):
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/core/services/operation_service.py", line 243, in initiate_prelaunch
    result_msg, nr_datatypes = adapter_instance._prelaunch(operation, view_model, available_space)
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/core/adapters/abcadapter.py", line 90, in new_function
    return func(*args, **kw)
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/core/adapters/abcadapter.py", line 353, in _prelaunch
    result = self.launch(view_model)
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/adapters/creators/tumor_dataset_creator.py", line 261, in launch
    conn_gid = self.__import_tumor_connectivity(datatype_folder, patient, user_tag, self.storage_path)
AttributeError: 'TumorDatasetCreator' object has no attribute 'storage_path'
2021-09-24 10:00:53,088 - DEBUG [proc:65776]  - tvb.core.entities.storage.root_dao - We will store entity of type: Operation with id 35
2021-09-24 10:00:53,096 - DEBUG [proc:65776]  - tvb.core.entities.storage.root_dao - After commit Operation ID is 35
2021-09-24 10:00:53,130 - ERROR [proc:65776]  - tvb.core.operation_async_launcher - Could not execute operation 35
2021-09-24 10:00:53,130 - ERROR [proc:65776]  - tvb.core.operation_async_launcher - 'TumorDatasetCreator' object has no attribute 'storage_path'
Traceback (most recent call last):
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/core/operation_async_launcher.py", line 79, in do_operation_launch
    OperationService().initiate_prelaunch(curent_operation, adapter_instance)
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/core/services/operation_service.py", line 262, in initiate_prelaunch
    self._handle_exception(excep1, temp_files, msg, operation)
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/core/services/operation_service.py", line 319, in _handle_exception
    raise exception.with_traceback(
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/core/services/operation_service.py", line 243, in initiate_prelaunch
    result_msg, nr_datatypes = adapter_instance._prelaunch(operation, view_model, available_space)
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/core/adapters/abcadapter.py", line 90, in new_function
    return func(*args, **kw)
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/core/adapters/abcadapter.py", line 353, in _prelaunch
    result = self.launch(view_model)
  File "/Users/pipeline/WORK/TVB_GIT/tvb-root/framework_tvb/tvb/adapters/creators/tumor_dataset_creator.py", line 261, in launch
    conn_gid = self.__import_tumor_connectivity(datatype_folder, patient, user_tag, self.storage_path)
AttributeError: 'TumorDatasetCreator' object has no attribute 'storage_path'