moved config files

.gitignore

-conf/sql.json
-conf/dhcp.conf
+conf/pdns-slave.json
+conf/dhcpd.conf
+conf/dhcpd-gen.conf
 conf/hosts.json
 
 /.idea

conf/sql.json.conf → conf/pdns-slave.json.default

 {
+  "dhcpd-file":       "/etc/dhcp/dhcpd.conf",
+  "dhcpd-template":   "/etc/pdns-slave/dhcpd.conf",
+
+  "hosts-file":       "/etc/pdns-slave/hosts.json",
+
   "master-server":    "ns.example.com",
   "master-user":      "master-user",
   "master-password":  "master-password",