Add usafacts production params file

Author: korlaxxalrok

ansible/files/usafacts-params-prod.json

@@ -0,0 +1,7 @@
+{
+  "export_start_date": "2020-02-20",
+  "static_file_dir": "./static",
+  "export_dir": "./receiving",
+  "cache_dir": "./cache",
+  "base_url": "https://usafactsstatic.blob.core.windows.net/public/data/covid-19/covid_{metric}_usafacts.csv"
+}