[ROCKETMQ-160]SendHeartBeat may not be logged in the expected period closes apache/incubator-rocketmq#86

[ROCKETMQ-200]-Cluster name is always missing when fetch ClusterInfo from name server closes apache/incubator-rocketmq#105

[ROCKETMQ-188]RemotingExecption is not consistent between invoke async and invoke oneway closes apache/incubator-rocketmq#98

[ROCKETMQ-98]Fix risk of unable to release putMessage Lock forever closes apache/incubator-rocketmq#61

[ROCKETMQ-189] Misleading tip on consumeTimestamp and wrong consumeTimestamp exception message closes apache/incubator-rocketmq#97

[ROCKETMQ-175] Consumer may miss messages because of inconsistent sub…  closes apache/incubator-rocketmq#92

[ROCKETMQ-161] Update runbroker.sh and runserver.sh to support user defined jvm mem flag closes apache/incubator-rocketmq#87

Thanks to StyleTang

[ROCKETMQ-187] Measure the code coverage for Integration Tests, and add sonar-apache profile, closes apache/incubator-rocketmq#96

[ROCKETMQ-107] Fix possible concurrency problem on ServiceState when consumer start/shutdown, closes apache/incubator-rocketmq#68

BugFix: WS_DOMAIN_NAME, SUBGROUP default values override custom values passed by java options options

[ROCKETMQ-76] Expose IntegrationTestBase to be used by other integration projects closes apache/incubator-rocketmq#52