When enrolling Dell nodes, use drac_address instead of deprecated drac_host

Change-Id: Id08a1a3c439959b160377fe271af79f1b95ba978
Closes-Bug: #1695015

releasenotes/notes/drac-address-d835a529a7c17242.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Stop relying on deprecated alias ``drac_host`` for the ``drac_address``
+    field when enrolling Dell nodes.

tripleo_common/tests/utils/test_nodes.py

@@ -605,7 +605,7 @@ class NodesTest(base.TestCase):
         nodes.register_ironic_node(node, client=client)
         client.node.create.assert_called_once_with(
             driver='pxe_drac', name='node1', properties=node_properties,
-            driver_info={'drac_password': 'random', 'drac_host': 'foo.bar',
+            driver_info={'drac_password': 'random', 'drac_address': 'foo.bar',
                          'drac_username': 'test', 'drac_port': '6230'})
 
     def test_register_ironic_node_redfish(self):

tripleo_common/utils/nodes.py

@@ -224,8 +224,7 @@ class iBootDriverInfo(PrefixedDriverInfo):
 DRIVER_INFO = {
     # production drivers
     '(ipmi|.*_ipmitool)': PrefixedDriverInfo('ipmi', has_port=True),
-    '.*_drac': PrefixedDriverInfo('drac', address_field='host',
-                                  has_port=True),
+    '.*_drac': PrefixedDriverInfo('drac', has_port=True),
     '.*_ilo': PrefixedDriverInfo('ilo'),
     '.*_ucs': PrefixedDriverInfo(
         'ucs',