[CORD-2161]
Fix DNS server startup issues with unbound/nsd

Change-Id: I4f1a00da40d10e093077e22bdf95643e11f34836
(cherry picked from commit 503aabf6a2827ba4be820d33e1c30b5ae188f536)
diff --git a/roles/dns-unbound/defaults/main.yml b/roles/dns-unbound/defaults/main.yml
index 4ccf5de..a3f4aa7 100644
--- a/roles/dns-unbound/defaults/main.yml
+++ b/roles/dns-unbound/defaults/main.yml
@@ -15,8 +15,8 @@
 
 # dns-unbound/defaults/main.yml
 
-unbound_conf: "/var/unbound/etc/unbound.conf"
-unbound_group: "wheel"
+unbound_conf: "/etc/unbound/unbound.conf"
+unbound_group: "unbound"
 
 unbound_listen_on_default: False