Bug 2172413

Description of problem:
Run the below python code

from libnmstate import netapplier
from libnmstate import netinfo
from libnmstate.schema import Interface
import logging
import sys                                                                  
import yaml
                                                                           
def logger_level(logger, verbose=False, debug=False):      
    log_level = logging.DEBUG                                              
    if debug:
        log_level = logging.DEBUG                                          
    elif verbose:                                                          
        log_level = logging.INFO
    logger.setLevel(log_level)
 
 
def configure_logger(log_file=False, verbose=False, debug=False):
    LOG_FORMAT = ('%(asctime)s.%(msecs)03d %(levelname)s '
                  '%(name)s.%(funcName)s %(message)s')
    DATE_FORMAT = '%Y-%m-%d %H:%M:%S'
    logger = logging.getLogger("os_net_config")
    logger.handlers.clear()
    logger_level(logger, verbose, debug)
    logger.propagate = True
    formatter = logging.Formatter(fmt=LOG_FORMAT, datefmt=DATE_FORMAT)
    if log_file:
        file_handler = logging.handlers.RotatingFileHandler(
            _LOG_FILE, maxBytes=10485760, backupCount=7
        )
        file_handler.setFormatter(formatter)
        logger.addHandler(file_handler)
    stream_handler = logging.StreamHandler(sys.stdout)
    stream_handler.setFormatter(formatter)
    logger.addHandler(stream_handler)
    return logger
 
 
logger = configure_logger()
 
logger.debug("---------PRE_NETINFO LOG-----------------")
 
ifaces = netinfo.show_running_config()[Interface.KEY]
ifaces_dmp = yaml.dump(ifaces,  default_flow_style = False,
                       allow_unicode = True, encoding = None)
logger.debug("-------POST_NETINFO_LOG------------------")
logger.debug("Running info: \n %s"  % ifaces_dmp)

Its found that after invoking netinfo.show_running_config(), the logs are duplicated.

Version-Release number of selected component (if applicable):
nmstatectl 2.2.6


Actual results:
[root@dell-r640-oss-14 ~]# python nmstate_test.py                                                                                                        
2023-02-14 16:53:59.240 DEBUG os_net_config.<module> ---------PRE_NETINFO LOG-----------------                                                           
2023-02-14 16:53:59.360 DEBUG os_net_config.<module> -------POST_NETINFO_LOG------------------                                                           
DEBUG:os_net_config:-------POST_NETINFO_LOG------------------               
2023-02-14 16:53:59.360 DEBUG os_net_config.<module> Running info:

.....


Expected results:

2023-02-14 16:53:59.240 DEBUG os_net_config.<module> ---------PRE_NETINFO LOG-----------------                                                           
2023-02-14 16:53:59.360 DEBUG os_net_config.<module> -------POST_NETINFO_LOG------------------                                                           
2023-02-14 16:53:59.360 DEBUG os_net_config.<module> Running info:
....