refactor

...amples/netapp-invoker-sample/capif-sdk-config-sample.json

netapp-samples/netapp-invoker-sample/netapp-invoker.py

netapp-samples/netapp-provider-sample/netapp-provider.py

samples/provider_api_description_sample.json

scripts/invoker_capif_connector.py

scripts/invoker_capif_connector_offboarding.py

scripts/invoker_capif_connector_update.py

scripts/invoker_service_discovery.py

scripts/invoker_service_get_token.py

scripts/provider_capif_connector.py

scripts/provider_capif_connector_offboarding.py

scripts/provider_capif_connector_update.py

scripts/provider_get_published_api.py

scripts/provider_publish_api.py

scripts/provider_unpublish_api.py

scripts/provider_update_api.py

scripts/utilities.py