Bad shell return code after "Validation tables already exist"

[ThrawnCA]

When the paster init-db command finds that the validation tables already exist, it returns a shell exit code of 1, indicating failure. However, since the command appears to otherwise be idempotent, this isn't really a failure. The desired end state has been achieved.

This exit code causes problems when the paster command is being run as part of a larger system, like a Chef cookbook. It has to be caught and handled every time to stop the cookbook exiting due to the presumed error.

If it's desirable to detect whether the tables already exist, perhaps there could instead be a separate paster command for this?