fix: update versions and fix minor bugs

pyms/flask/services/tracer.py

@@ -1,20 +1,19 @@
 import logging
 from typing import Union
 
-opentracing = None
-
-PrometheusMetricsFactory = None
-
-get_current_span = None
-
-
 from flask import current_app, has_request_context, request
 
 from pyms.config.conf import get_conf
 from pyms.constants import LOGGER_NAME
 from pyms.flask.services.driver import DriverService, get_service_name
 from pyms.utils import check_package_exists, import_from, import_package
 
+opentracing = None
+
+PrometheusMetricsFactory = None
+
+get_current_span = None
+
 logger = logging.getLogger(LOGGER_NAME)
 
 JAEGER_CLIENT = "jaeger"