How to create an **Intent recognized** trigger for a Regex-defined intent?

[zxyanliu]

Describe the bug

I was trying to update the weather tutorials and came up with this question: how to create an Intent recognized trigger and configure it to an intent defined using Regular Expressions? It seems users can only create an Intent recognized trigger using LUIS as recognizer type in the current new trigger wizard design implemented in PR1786.
@luhan2017 and @hibrenda found the similar issue during our meeting yesterday.

To Reproduce

Steps to reproduce the behavior:

1. Create an intent using Regular Expressions as a recognizer type.
2. Create an Intent recognized trigger
3. Have no idea to configure the intent defined using RegEx to this trigger

Expected behavior

Intent recognized trigger should be created to

Screenshots

[cwhitten]

addressed via #2151