Include JDBC exception messages in Query Status alerts

For JDBC datasources, please create a token that would enable us to include the JDBC driver exception message in the alert for Query Status data point alerts, the ones that are based on:

Query status - 1=ok, 2=credential invalid, 3=connection string invalid, 4=connection rejected, 5=driver not supported, 6=connection failure, 7=query failure

This would greatly help us to achieve faster time to resolution of incidents when the exception is code of type 6 and 7.