CommandDataRetrieval abstraction

Close: #73 (closed)

Work done:

• Handle an edge case when BatchNode was used without any request - previously CommunicationError was raised because of wrong jsonrpc message format, now NothingToSendError is raised.
• Bumped hive submodule
• Implement delay_error_on_data_access to batch request
• Make SuppressNotExistingApis accept multiple api names
• Refactor UpdateNodeData command
• Implement CommandDataRetrieval abstraction and use in the current UpdateNodeData
• Create SavingsDataRetrieval command and use it in SavingsDataProvider