[LOG4J2-353] Use consistent conventions in configuration files. Use all caps for "JDBC" to match other appenders like "SMTP".

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1514370 13f79535-47bb-0310-9956-ffa450edef68
[LOG4J2-353] Use consistent conventions in configuration files. Use all caps for "JPA" to match other appenders like "SMTP".

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1514371 13f79535-47bb-0310-9956-ffa450edef68