Change List:
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#333, KafkaUtilSpec causes out of memory on travis
#335, #359, Enable auto-deployment to sonatype
#299, Some UT may fail randomly, most because of the expectMsg time out
#338, fix kafka leader not available exception
#349, scoverage dependencies get into snapshot build binaries.
#352, add RollingCountSpec
#356, User's application.conf can not be loaded due to empty config.
#373, add more restrict checks for warning, deprecation and feature