Monitoring Core & BAM Publisher Implemented. \n https://wso2.org/jira/browse/WSAS-1756
Tomcat Valve based webapp stat collector implemented. https://wso2.org/jira/browse/WSAS-1735
JMX based monitoring stat collector implemented. https://wso2.org/jira/browse/WSAS-1757
bam-publisher should be disabled by default.
Fixing Sonar reported issues.
Fixing Sonar & suggestions of the code review.
lazy loading of the publisher has been encapsulated in PublisherBase.
Merge pull request #27 from kdchamil/master

Sonar reported issues reduced to zero. Code review suggestions implemented.
Catching MonitoringPublisherException instead of generic Exception.
Merge pull request #30 from kdchamil/master

Catching MonitoringPublisherException instead of generic Exception.
Merge pull request #32 from wso2-dev/monitoring

Merging changes for AS monitoring dashboard into dev/master.