URL Parametrization for HTTP trigger

[artesia-admin]

Is your feature request related to a problem? Please describe.
I don't know how to call urls like this: https://example.com/v1/users/{{.Input.body.userID}}. I need to substitute values from message into trigger url

Describe the solution you'd like
Anything that can substitute parameters in URL. Example 1 (with parameters):

      parameters:
      - src:
          dependencyName: depCustomerio
          dataTemplate: "https://example.com/v1/users/{{.Input.body.userID}}"
        dest: http.url

Example 2 (without parameters):

      http:
        method: POST
        url: 'https://example.com/v1/users/{{.Input.body.userID}}'

Additional context
url field there is mandatory and Example 1 gives an error "template customerio is invalid, server URL is not specified". Example 2 does not substitute anything at all.

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