Mechanism to separate out testing jobs in the DataSync log

[levyj]

This is not a huge thing but it might be useful to be able to separate out testing jobs in the DataSync log. Possible ways to do this:

1. Let Log ID be set as a command-line parameter.

2. Add a Y/N column for Testing to the log and create a command-line parameter to indicate that it should be set to Y. This would allow filtered views for the testing or non-testing records. A potential issue with this is that people already have Log datasets set up and would need to modify them.

3. Create a Plain Text column that simply records whatever value a user enters into a new command-line parameter -- similar to how some shipping companies will echo back a user-defined string on receipts so that the customer can use them for internal processes. Again, this would require people to modify their existing Log datasets.

Thanks.