GXF version 5.5.2

The following issues ar part of this release:
https://smartsocietyservices.atlassian.net/browse/OC-643 The Cucumber test for "Microgrids Re-establish Connection" fails often in the nightly build
https://smartsocietyservices.atlassian.net/browse/OC-651 Do not use deprecated methods from jDLMS library
https://smartsocietyservices.atlassian.net/browse/OC-590 Testing of MQTT protocol adapter - Kafka chain in the LiveLab OSGP environment
https://smartsocietyservices.atlassian.net/browse/OC-611 Implement changes to MQTT measurement message in MQTT protocol adapter
https://smartsocietyservices.atlassian.net/browse/OC-609 ConstraintViolationException when trying to create device without owner
https://smartsocietyservices.atlassian.net/browse/OC-607 Solve issues retrieving osgp-ws-microgrids XSDs
https://smartsocietyservices.atlassian.net/browse/OC-588 [TIMEBOX] Web service 'ArrayIndexOutOfBoundsException'
https://smartsocietyservices.atlassian.net/browse/OC-615 The cyclomatic complexity should be less than 10 for complex function for GXF
https://smartsocietyservices.atlassian.net/browse/OC-597 Investigate and implement an alternative for logback-ext-spring
https://smartsocietyservices.atlassian.net/browse/OC-648 Peakshaving: adapt the chain so the output given by a MQTT device is handled correctly
https://smartsocietyservices.atlassian.net/browse/OC-667 Peakshaving: adapt the chain so the information stream is published on Kafka using the correct ESM format