Minor bug fixes and code formating

    for context in contexts_add:

        context['topology_ids'] = []

        context['service_ids'] = []

        context['slice_ids'] = []

    return contexts_add

def get_descriptors_add_topologies(topologies : List[Dict]) -> List[Dict]:

    for topology in topologies_add:

        topology['device_ids'] = []

        topology['link_ids'] = []

        topology['optical_link_ids'] = []

    return topologies_add

def get_descriptors_add_services(services : List[Dict]) -> List[Dict]:

# See the License for the specific language governing permissions and

# limitations under the License.

# Enable eventlet for async networking

# NOTE: monkey_patch needs to be executed before importing any other module.

import eventlet