dhcp: add options for static leases and custom domain names

roles/cfg_openwrt/templates/corerouter/config/dhcp.j2

@@ -75,3 +75,20 @@ config odhcpd 'odhcpd'
 	option leasefile '/tmp/hosts/odhcpd'
 	option leasetrigger '/usr/sbin/odhcpd-update'
 	option loglevel '4'
+
+{% for dhcp_static_lease in dhcp_static_leases %}
+config host
+        option name '{{ dhcp_static_lease['name'] }}'
+        option mac '{{ dhcp_static_lease['mac'] }}'
+        option ip '{{ dhcp_static_lease['ip'] }}'
+    {% if dhcp_static_lease['dns'] is defined %}
+        option dns '{{ dhcp_static_lease['dns'] }}'
+    {% endif %}
+
+{% endfor %}
+{% for dhcp_custom_domain_name in dhcp_custom_domain_names %}
+config domain
+        option name '{{ dhcp_custom_domain_name['name'] }}'
+        option ip '{{ dhcp_custom_domain_name['ip'] }}'
+
+{% endfor %}