Add example file

example/all.pp

@@ -0,0 +1,26 @@
+# This example would install designate api and designate central service
+$rabbit_host           = '127.0.0.1'
+$rabbit_userid         = 'guest'
+$rabbit_password       = 'guest'
+$auth_strategy         = 'noauth'
+$backend_driver        = 'bind9'
+$designate_db_password = 'admin'
+$db_host               = 'localhost'
+
+  class {'designate':
+    rabbit_host     => $rabbit_host,
+    rabbit_userid   => $rabbit_userid,
+    rabbit_password => $rabbit_password,
+  }
+  class {'::designate::db':
+    database_connection   => "mysql://designate:${designate_db_password}@${db_host}/designate"
+
+  }
+
+  class {'designate::api':
+    auth_strategy   => $auth_strategy,
+  }
+
+  class {'designate::central':
+    backend_driver  => $backend_driver,
+  }