[Oracle Weblogic] Add missing KPI metrics to the integration

[muthu-mps]

Oracle Weblogic integration currently process the Deployed application metrics and the Thread pool metrics. These are common metrics which represents the number of deployed applications and thread pools etc... But there are certain key performance indicator's which user will be looking for while monitoring Weblogic that are missing right now.

Add the below metrics:

• JVM Metrics
• Database Metrics
• Connection pool Metrics
• Transactional Metrics

[botelastic]

Hi! We just realized that we haven't looked into this issue in a while. We're sorry! We're labeling this issue as Stale to make it hit our filters and make sure we get back to it as soon as possible. In the meantime, it'd be extremely helpful if you could take a look at it as well and confirm its relevance. A simple comment with a nice emoji will be enough :+1. Thank you for your contribution!