Use key as name if not provided in inventory yaml

We don't really need to specify the name of the host in the yaml
if it's already be there in the key. YMMV.

Change-Id: I82a11e1ae9b89f0426b1cc12923fb700406a873b

bifrost/inventory.py

@@ -187,6 +187,9 @@ def _process_baremetal_data(data_source, groups, hostvars):
             continue
 
         host = file_data[name]
+        if 'name' not in host:
+            host['name'] = name
+
         # Perform basic validation
         node_net_data = host.get('node_network_data')
         ipv4_addr = host.get('ipv4_address')