KAA-267: Add support of new 'Generic' flume event format to Flume appender.
KAA-267: merge branch develop/v0.6.2 into branch feature/KAA-267.
Merge pull request #43 from kaaproject/feature/KAA-267

KAA-267: Add support of new 'Generic' flume event format to Flume appender.