Add rule_name to args when an error occurs

[derekgengenbacher-wf]

Description:

In order to give as much information to people around errors, include the rule name as an argument on all xule:error validations.

Testing:

Get an error to fire during the evaluation of a rule. The resulting validation json should include the rule_name as argument on the xule:error validation.

@campbellpryde @davidtauriello