add fake key to test

Author: minhkhul

_delphi_utils_python/tests/params.json.template

@@ -1,3 +1,8 @@
 {
-  "test": "yes"
+  "test": "yes",
+  "validation": {
+    "common": {
+      "api_credentials": "fake_key"
+    }
+  }
 }