METRON-1295 Unable to Configure Logging for REST API

[nickwallen]

When configuring the logging for the REST API, the following exception occurs.

log4j:ERROR A "org.apache.log4j.RollingFileAppender" object is not assignable to a "org.apache.hadoop.hbase.shaded.org.apache.log4j.Appender" variable.

This change prevents the shaded log4j dependencies of metron-hbase from bleeding into metron-rest.

Testing

1. Spin-up Full Dev
2. Create a log4j configuration file. In this example /usr/metron/0.4.2/config/log4j.properties
3. Add the following to "Metron JVM Flags" in Ambari > Metron > Config.

   -Dlog4j.debug -Dlog4j.configuration=file:/usr/metron/0.4.2/config/log4j.properties
   

4. Restart Metron REST and watch the logging output. Ensure that you can configure logging as you would expect.

Pull Request Checklist

• Is there a JIRA ticket associated with this PR? If not one needs to be created at Metron Jira.
• Does your PR title start with METRON-XXXX where XXXX is the JIRA number you are trying to resolve? Pay particular attention to the hyphen "-" character.
• Has your PR been rebased against the latest commit within the target branch (typically master)?
• Have you included steps to reproduce the behavior or problem that is being changed or addressed?
• Have you included steps or a guide to how the change may be verified and tested manually?
• Have you ensured that the full suite of tests and checks have been executed in the root metron folder via:
• Have you verified the basic functionality of the build by building and running locally with Vagrant full-dev environment or the equivalent?

[cestella]

Dig. +1 by inspection