Updated Promtheus URL

LOGGER       = logging.getLogger(__name__)

METRICS_POOL = MetricsPool('KpiValueAPI', 'NBIgRPC')

PROM_URL     = "http://localhost:9090"

PROM_URL     = "http://prometheus-k8s.monitoring.svc.cluster.local:9090"    # TODO: updated with the env variables

class KpiValueApiServiceServicerImpl(KpiValueAPIServiceServicer):

    def __init__(self):

        prom_response = []

        for start_time, end_time in zip(start_timestamps, end_timestamps):

            for metric in metrics:

                # print(start_time, end_time, metric)

                print(start_time, end_time, metric)

                LOGGER.debug(">>> Query: {:}".format(metric))

                prom_response.append(

                    prom_connect.custom_query_range(

                    query      = metric,        # this is the metric name and label config