Refactor to use Feature.enabled?

Author: KPobeeNorris

config/routes.rb

@@ -23,7 +23,7 @@ def valid_format?(request)
 # the path below.
 # If the dummy page entry that represents this app is moved in Contentful, this url will need to be updated,
 # a redirect added in Contentful, and the CloudFront config changed to reflect the new url.
-CSR_APP_PATH = if ENV.fetch("FF_NEW_CSR_URL", false)
+CSR_APP_PATH = if Feature.enabled?("FF_NEW_CSR_URL")
                  "/consumer/energy/energy-supply/get-a-better-energy-deal/compare-domestic-energy-suppliers-customer-service/"
                else
                  "/consumer/your-energy/get-a-better-energy-deal/compare-domestic-energy-suppliers-customer-service/"
@@ -39,7 +39,7 @@ def valid_format?(request)
 
     constraints CountryConstraint.new do
       scope "(:country)" do
-        if ENV.fetch("FF_NEW_CSR_URL", false)
+        if Feature.enabled?("FF_NEW_CSR_URL")
           get "/consumer/your-energy/get-a-better-energy-deal/compare-domestic-energy-suppliers-customer-service",
               to: redirect(CSR_APP_PATH)
           get "/consumer/your-energy/get-a-better-energy-deal/compare-domestic-energy-suppliers-customer-service/:id/details",