move border router constants to conf file

conf/border_router.py

+BORDER_ROUTER_NAME = "br"
+BORDER_ROUTER_IP = "172.18.0.1"
+BORDER_ROUTER_PUBLIC_IP = "172.18.10.1"
+BORDER_ROUTER_NETWORK_NAME = "BR"
+BORDER_ROUTER_NETWORK_IP = "172.18.0.0/24"

modules/routing.py → modules/border_router.py

 import sys
+import conf.border_router
 
-BORDER_ROUTER_NAME = "br"
-BORDER_ROUTER_IP = "172.18.0.1"
-BORDER_ROUTER_PUBLIC_IP = "172.18.10.1"
-BORDER_ROUTER_NETWORK_NAME = "BR"
-BORDER_ROUTER_NETWORK_IP = "172.18.0.0/24"
 
 def _are_br_parameters_free(definitions):
     """ Checks if border router parameters are not already taken. """

modules/file_generator.py

 import jinja2
 import os
+import conf.border_router
 
 from modules.device_creator import create_devices
 from modules.ansible_data_generator import create_network_map, create_host_map, create_network_ips
-from modules.routing import BORDER_ROUTER_IP, BORDER_ROUTER_NAME, BORDER_ROUTER_NETWORK_NAME, BORDER_ROUTER_PUBLIC_IP
 
 def _load_template(template_name):
     """ Returns a loaded jinja2 template. """

modules/network_parser.py

 """ This module handles network creation. """
 
 import sys
-from modules.routing import BORDER_ROUTER_NAME, BORDER_ROUTER_PUBLIC_IP
+from conf.border_router import BORDER_ROUTER_NAME, BORDER_ROUTER_PUBLIC_IP
 
 
 def _find_networks(hostname, mappings, device_type):

modules/preprocessing.py

@@ -2,7 +2,7 @@
 called after validating the input but before device creation.
 """
 
-from modules.routing import create_border_router
+from modules.border_router import create_border_router
 
 def preprocess(definitions, flags):
     """