Creating empty dhcpd.reservations and moving old dhcpd.reservations to dhcpd.reservations.sample

Change-Id: I6bd25b3c2ffd5a9a2a3142ebddf0779a62b4e440
diff --git a/roles/maas/files/dhcpd.reservations b/roles/maas/files/dhcpd.reservations
index a7860c3..a31555b 100644
--- a/roles/maas/files/dhcpd.reservations
+++ b/roles/maas/files/dhcpd.reservations
@@ -1,79 +1,6 @@
 ############################################################################
 ## RESERVATIONS
 ############################################################################
-
-# RACK1 - Rack with two fabric switches
-host fabric01 {
-    hardware ethernet cc:37:ab:17:7b:c0;
-    fixed-address  10.0.128.100;
-}
-host fabric02 {
-    hardware ethernet 70:72:cf:f5:60:9e;
-    fixed-address 10.0.128.101;
-}
-host cord-r1-s2 {
-    hardware ethernet 2c:60:0c:e3:c4:2d;
-    fixed-address 10.0.128.113;
-}
-host cord-r1-s2-ipmi {
-    hardware ethernet 2c:60:0c:e3:c4:2f;
-    fixed-address 10.0.128.107;
-}
-host cord-r1-s3 {
-    hardware ethernet 2c:60:0c:cb:00:ef;
-    fixed-address 10.0.128.115;
-}
-host cord-r1-s3-ipmi {
-    hardware ethernet 2c:60:0c:cb:00:f1;
-    fixed-address 10.0.128.108;
-}
-host cord-r1-s4 {
-    hardware ethernet 2c:60:0c:cb:00:3b;
-    fixed-address 10.0.128.116;
-}
-host cord-r1-s4-ipmi {
-    hardware ethernet 2c:60:0c:cb:00:3d;
-    fixed-address 10.0.128.110;
-}
-
-# RACK 2 - Rack with full fabric (2 leaf / 2 spine)
-host spine01 {
-    hardware ethernet cc:37:ab:6e:e3:40;
-    fixed-address 192.168.42.238;
-}
-host spine02 {
-    hardware ethernet cc:37:ab:6b:0d:a6;
-    fixed-address 192.168.42.223;
-}
-host leaf01 {
-    hardware ethernet cc:37:ab:6e:e3:c2;
-    fixed-address 192.168.42.221;
-}
-host leaf02 {
-    hardware ethernet cc:37:ab:6e:e4:c6;
-    fixed-address 192.168.42.222;
-}
-host cord-r2-s2 {
-    hardware ethernet 00:25:90:fa:5f:78;
-    fixed-address 10.0.128.113;
-}
-host cord-r2-s2-ipmi {
-    hardware ethernet 00:25:90:ff:a7:97;
-    fixed-address 10.0.128.118;
-}
-host cord-r2-s3 {
-    hardware ethernet 00:25:90:fa:5f:52;
-    fixed-address 10.0.128.115;
-}
-host cord-r2-s3-ipmi {
-    hardware ethernet 00:25:90:ff:a7:3e;
-    fixed-address 10.0.128.121;
-}
-host cord-r2-s4 {
-    hardware ethernet 00:25:90:fa:5f:4e;
-    fixed-address 10.0.128.124;
-}
-host cord-r2-s4-ipmi {
-    hardware ethernet 00:25:90:ff:a7:3c;
-    fixed-address 10.0.128.116;
-}
+#
+# The file is used to bind specific IP addresses to known MAC addresses.
+# Examples are available in /etc/dhcp/dhcpd.reservations.samples.
diff --git a/roles/maas/files/dhcpd.reservations.sample b/roles/maas/files/dhcpd.reservations.sample
new file mode 100644
index 0000000..a7860c3
--- /dev/null
+++ b/roles/maas/files/dhcpd.reservations.sample
@@ -0,0 +1,79 @@
+############################################################################
+## RESERVATIONS
+############################################################################
+
+# RACK1 - Rack with two fabric switches
+host fabric01 {
+    hardware ethernet cc:37:ab:17:7b:c0;
+    fixed-address  10.0.128.100;
+}
+host fabric02 {
+    hardware ethernet 70:72:cf:f5:60:9e;
+    fixed-address 10.0.128.101;
+}
+host cord-r1-s2 {
+    hardware ethernet 2c:60:0c:e3:c4:2d;
+    fixed-address 10.0.128.113;
+}
+host cord-r1-s2-ipmi {
+    hardware ethernet 2c:60:0c:e3:c4:2f;
+    fixed-address 10.0.128.107;
+}
+host cord-r1-s3 {
+    hardware ethernet 2c:60:0c:cb:00:ef;
+    fixed-address 10.0.128.115;
+}
+host cord-r1-s3-ipmi {
+    hardware ethernet 2c:60:0c:cb:00:f1;
+    fixed-address 10.0.128.108;
+}
+host cord-r1-s4 {
+    hardware ethernet 2c:60:0c:cb:00:3b;
+    fixed-address 10.0.128.116;
+}
+host cord-r1-s4-ipmi {
+    hardware ethernet 2c:60:0c:cb:00:3d;
+    fixed-address 10.0.128.110;
+}
+
+# RACK 2 - Rack with full fabric (2 leaf / 2 spine)
+host spine01 {
+    hardware ethernet cc:37:ab:6e:e3:40;
+    fixed-address 192.168.42.238;
+}
+host spine02 {
+    hardware ethernet cc:37:ab:6b:0d:a6;
+    fixed-address 192.168.42.223;
+}
+host leaf01 {
+    hardware ethernet cc:37:ab:6e:e3:c2;
+    fixed-address 192.168.42.221;
+}
+host leaf02 {
+    hardware ethernet cc:37:ab:6e:e4:c6;
+    fixed-address 192.168.42.222;
+}
+host cord-r2-s2 {
+    hardware ethernet 00:25:90:fa:5f:78;
+    fixed-address 10.0.128.113;
+}
+host cord-r2-s2-ipmi {
+    hardware ethernet 00:25:90:ff:a7:97;
+    fixed-address 10.0.128.118;
+}
+host cord-r2-s3 {
+    hardware ethernet 00:25:90:fa:5f:52;
+    fixed-address 10.0.128.115;
+}
+host cord-r2-s3-ipmi {
+    hardware ethernet 00:25:90:ff:a7:3e;
+    fixed-address 10.0.128.121;
+}
+host cord-r2-s4 {
+    hardware ethernet 00:25:90:fa:5f:4e;
+    fixed-address 10.0.128.124;
+}
+host cord-r2-s4-ipmi {
+    hardware ethernet 00:25:90:ff:a7:3c;
+    fixed-address 10.0.128.116;
+}
diff --git a/roles/maas/tasks/main.yml b/roles/maas/tasks/main.yml
index 6e2a2aa..20e8a57 100644
--- a/roles/maas/tasks/main.yml
+++ b/roles/maas/tasks/main.yml
@@ -214,6 +214,7 @@
   with_items:
     - { src: 'dhcpd.blacklist', dest: '/etc/dhcp' }
     - { src: 'dhcpd.reservations', dest: '/etc/dhcp' }
+    - { src: 'dhcpd.reservations.sample', dest: '/etc/dhcp' }
     - { src: 'dhcp_harvest.inc', dest: '/etc/bind/maas' }
     - { src: 'named.conf.options.inside.maas', dest: '/etc/bind/maas' }
     - { src: 'dhcpd.conf.template', dest: '/etc/maas/templates/dhcp' }