Optional configuration is required in Job DSL

[martinmosegaard]

When declaring a trigger via Job DSL, I was told that:

the following options are required and must be specified: regexpFilterText, regexpFilterExpression

although they appear to be optional when configuring via the Jenkins UI.

I could work around it by adding them with empty strings, but it would be nice if they were not required.

Using latest plugin version, 1.46.