Fix pep8 warnings.
Fix pep8 warnings.

iot-factory/synapse,iot-factory/synapse,TribeMedia/synapse,matrix-org/synapse,iot-factory/synapse,iot-factory/synapse,TribeMedia/synapse,matrix-org/synapse,matrix-org/synapse,TribeMedia/synapse,matrix-org/synapse,TribeMedia/synapse,TribeMedia/synapse,matrix-org/synapse,iot-factory/synapse,matrix-org/synapse