[CORD-1523]
"mock" targets with make-based build

Change-Id: I584bdfec7fa60557d7349aed1b0808ebe838220c
diff --git a/prep-headnode-playbook.yml b/prep-headnode-playbook.yml
index b1877db..bca4959 100644
--- a/prep-headnode-playbook.yml
+++ b/prep-headnode-playbook.yml
@@ -48,7 +48,7 @@
   become: yes
   roles:
     - { role: dns-configure, when: not use_maas }
-    - { role: dhcpd, when: not use_maas }
+    - { role: dhcpd, when: not (use_maas or frontend_only) }
 
 - name: Install apt-cacher-ng
   hosts: head