allow repeating keys in match rules

extends the match template, yes, its not pretty
readable, to support array definitions for
defining multiple server or stores.

examples/match.pp

@@ -9,8 +9,27 @@
     'shared_key'     => 'my_shared_key',
     'self_hostname'  => 'instance.test.com',
     'ca_cert_path'   => '/path/to/ca.cert',
-    'servers'        => {
-      'host' => 'test.server.com'
-    }
+    'server'         => [{
+      'host' => 'test.server.com',
+    }]
+  }
+}
+
+::fluentd::match { 'test':
+  priority => 30,
+  pattern  => '*.test',
+  config   => {
+    'type'  => 'copy',
+    'store' => [{
+      'type'           => 'elasticsearch',
+      'logstashformat' => true,
+      'hosts'          => '172.20.10.17:9200',
+      'flush_interval' => '30s',
+      },
+      {
+      'type' => 'file',
+      'path' => '/tmp/td-agent-debug.log',
+      }
+    ]
   }
 }