add option to mirror ldap groups into netbox

this commit allows ldap assigned groups to be mirrored into
netbox users.

The default is None as this is not the primary way to do this
change.

Author: ikaremostest

configuration/ldap_config.py

@@ -71,6 +71,7 @@ def import_group_type(group_type_name):
 
 # For more granular permissions, we can map LDAP groups to Django groups.
 AUTH_LDAP_FIND_GROUP_PERMS = os.environ.get('AUTH_LDAP_FIND_GROUP_PERMS', 'True').lower() == 'true'
+AUTH_LDAP_MIRROR_GROUPS = os.environ.get('AUTH_LDAP_MIRROR_GROUPS', None).lower() == 'true'
 
 # Cache groups for one hour to reduce LDAP traffic
 AUTH_LDAP_CACHE_TIMEOUT = int(os.environ.get('AUTH_LDAP_CACHE_TIMEOUT', 3600))