Fix ios_l3_interface configure ipv4 address issue (#34222)

Adding a new interface and it's ipv4/ipv6 address results
in failure. Add a check to validate if interface address is
already configured or not.

lib/ansible/modules/network/ios/ios_l3_interface.py

@@ -185,14 +185,14 @@ def map_obj_to_commands(updates, module):
 
         elif state == 'present':
             if ipv4:
-                if obj_in_have is None or ipv4 != obj_in_have['ipv4']:
+                if obj_in_have is None or obj_in_have.get('ipv4') is None or ipv4 != obj_in_have['ipv4']:
                     address = ipv4.split('/')
                     if len(address) == 2:
                         ipv4 = '{0} {1}'.format(address[0], to_netmask(address[1]))
                     commands.append('ip address {}'.format(ipv4))
 
             if ipv6:
-                if obj_in_have is None or obj_in_have['ipv6'] is None or ipv6.lower() != obj_in_have['ipv6'].lower():
+                if obj_in_have is None or obj_in_have.get('ipv6') is None or ipv6.lower() != obj_in_have['ipv6'].lower():
                     commands.append('ipv6 address {}'.format(ipv6))
 
         if commands[-1] == interface: