Added new parameter

Added pdns-api-password and http-auth parameter to Api-Init

certbot_pdns/PdnsApiAuthenticator.py

             config = json.load(f)
         self.api.set_api_key(config["api-key"])
         self.api.set_base_url(config["base-url"])
+        self.api.set_api_pass(config["api-pass"])
+        self.api.set_http_auth_user(config["http-auth-user"])
+        self.api.set_http_auth_pass(config["http-auth-pas"])
         self.axfr_time = config["axfr-time"]
         self.zones = self.api.list_zones()
         # print(self.zones)