do not append default novalocal domain to hostname

Author: syedhaseebahmed

components/nova/values.yaml

@@ -68,6 +68,8 @@ conf:
       # adjust default quotas to make it possible to use baremetal
       cores: 512
       ram: "1024000"
+    api:
+      dhcp_domain: ""
 
     # (TODO) This is to help with an upstream Nova bug:
     # https://review.opendev.org/c/openstack/nova/+/883411