Add a security scanner api config object for params

Change SecScanAPI to use a uri creation func instead of test context

Pass config provider through validator context

Remove app config dependency for validators

util/config/provider/basefileprovider.py

@@ -68,3 +68,7 @@ class BaseFileProvider(BaseProvider):
         return True
 
     return False
+
+  def get_config_root(self):
+    return self.config_volume
+