MergeTable step fails with cbo error

Pushed to develop branch after team discussion.

Possible future action may involve:

1. Pushing change to current Kylo master/develop.

2. Back porting change to v0.9.0.2.

This is not yet in Kylo master since the error was seen on MapR environment, which is a custom environment. The change may need to be tested on HDP and Cloudera before incorporating into current codebase.

Closing this for now since patch is provided. Test results are being awaited.

If needed, this Jira can be opened later based upon test results.

The patch nar has been provided for 0.9.0.2 version

Provided a patch consisting of the nar and the bundled jar. To be tested in target environment.