Parameter references not getting generated in admin page URLs

Preconditions

1. MFTF 2.1.2
2. PHP 7.0.28

Steps to reproduce

1. Create a Page file/entity for the backend that references a variable in its URL, e.g. <page name="AdminProductEditPage" url="catalog/product/edit/id/{{id}}/" area="admin" module="Magento_Catalog" parameterized="true">
2. Inside a test make a reference to that page and pass it an entity that was created during the test. For example have this:

<createData entity="_defaultCategory" stepKey="createCategory"/>
<createData entity="_defaultProduct" stepKey="createSimpleStandaloneProduct">
       <requiredEntity createDataKey="createCategory"/>
</createData>

Then have this:

<amOnPage url="{{AdminProductEditPage.url($$createSimpleStandaloneProduct.id$$)}}" stepKey="goToProductEditPage1"/>

3. Generate the test that contains those steps.

Expected result

1. The step that uses the amOnPage action should look like this:

$I->amOnPage("/" . getenv("MAGENTO_BACKEND_NAME") . "/catalog/product/edit/id/" . $this->createSimpleStandaloneProduct->getCreatedDataByName('id') . "/");

Actual result

1. The step actually looks like this:

$I->amOnPage("/" . getenv("MAGENTO_BACKEND_NAME") . "/catalog/product/edit/id/$$createSimpleStandaloneProduct.id$$/");

This only happens on admin pages. Will open a pull request to fix this.

[okolesnyk]

Pull Request delivered. Thank you for submitting and fixing this issue