Milestone about the releasing of fiware-connectors 0.4.1 (release-iotplatform-v1 with bugfixing and hardening).

Regarding Cygnus, the main hardening tasks within this release should be:

• Only Flume events related to a persistence error are reínjected in the agent channel (telefonicaid/fiware-connectors#52)
• A TTL has been added to the re-injected Flume events (https://github.com/telefonicaid/fiware-connectors/issues/126)
• Cygnus version is now showed in the logs (https://github.com/telefonicaid/fiware-connectors/issues/104)
• Manual build and RPM build both using the same lo4j.properties.template (https://github.com/telefonicaid/fiware-connectors/issues/111)
• Usage of Timestamp Interceptor instead of custom timestamping mechanism (https://github.com/telefonicaid/fiware-connectors/issues/143)
• Configurable Hive endpoint independent of the HDFS endpoint (https://github.com/telefonicaid/fiware-connectors/issues/173)
• Multiple HDFS endpoint setup (https://github.com/telefonicaid/fiware-connectors/issues/175)
• Migration from Cygnus 0.1 to 0.2 or higher has been documented (https://github.com/telefonicaid/fiware-connectors/issues/135)
• Migration from ngsi2cosmos to Cygnus has been documented (https://github.com/telefonicaid/fiware-connectors/issues/105)
• Alarms related to Cygnus have been documented (https://github.com/telefonicaid/fiware-connectors/issues/112)