clean up mac address with the pxe configuration files

In pxe_utils.py/create_pxe_config function, mac pxe configs will always
be created, so when we clear pxe configs, no matter whether the ip
address is None or not, we need to clear them.

Change-Id: I5cee9c4465630b162baf911ef9efef5f471671c0
Signed-off-by: Armstrong Liu <vpbvmw651078@gmail.com>

ironic/common/pxe_utils.py

@@ -345,8 +345,6 @@ def clean_up_pxe_config(task, ipxe_enabled=False):
     if is_uefi_boot_mode and not ipxe_enabled:
         api = dhcp_factory.DHCPFactory().provider
         ip_addresses = api.get_ip_addresses(task)
-        if not ip_addresses:
-            return
 
         for port_ip_address in ip_addresses:
             try:

ironic/tests/unit/common/test_pxe_utils.py

@@ -874,6 +874,33 @@ class TestPXEUtils(db_base.DbTestCase):
         relpath = pxe_utils.get_path_relative_to_tftp_root(test_file_path)
         self.assertEqual(relpath, 'pxelinux.cfg/test')
 
+    @mock.patch('ironic.common.utils.rmtree_without_raise', autospec=True)
+    @mock.patch('ironic_lib.utils.unlink_without_raise', autospec=True)
+    @mock.patch('ironic.common.dhcp_factory.DHCPFactory.provider',
+                autospec=True)
+    def test_clean_up_pxe_config_uefi_no_ipaddress(self, provider_mock,
+                                                   unlink_mock,
+                                                   rmtree_mock):
+        address = "aa:aa:aa:aa:aa:aa"
+        properties = {'capabilities': 'boot_mode:uefi'}
+        object_utils.create_test_port(self.context, node_id=self.node.id,
+                                      address=address)
+
+        provider_mock.get_ip_addresses.return_value = []
+
+        with task_manager.acquire(self.context, self.node.uuid) as task:
+            task.node.properties = properties
+            pxe_utils.clean_up_pxe_config(task)
+
+            unlink_calls = [
+                mock.call('/tftpboot/pxelinux.cfg/01-%s' %
+                          address.replace(':', '-')),
+                mock.call('/tftpboot/aa:aa:aa:aa:aa:aa.conf')
+            ]
+            unlink_mock.assert_has_calls(unlink_calls)
+            rmtree_mock.assert_called_once_with(
+                os.path.join(CONF.pxe.tftp_root, self.node.uuid))
+
 
 @mock.patch.object(ipxe.iPXEBoot, '__init__', lambda self: None)
 @mock.patch.object(pxe.PXEBoot, '__init__', lambda self: None)