Added zk client for distributed barriers + started to simplify test configuration.

akka-remote/src/multi-jvm/scala/akka/remote/AbstractRemoteActorMultiJvmSpec.scala

@@ -0,0 +1,23 @@
+package akka.remote
+
+import com.typesafe.config.{Config, ConfigFactory}
+
+trait AbstractRemoteActorMultiJvmSpec {
+  def NrOfNodes: Int
+  def commonConfig: Config
+
+  def remotes: List[String] = {
+    val listOpt = Option(System.getProperty("test.hosts")).map(_.split(",").toList)
+    listOpt getOrElse List.fill(NrOfNodes)("localhost")
+  }
+
+  val nodeConfigs = ((1 to NrOfNodes).toList zip remotes) map {
+    case (idx, host) =>
+      ConfigFactory.parseString("""
+        akka {
+          remote.server.hostname="%s"
+          remote.server.port = "999%d"
+          cluster.nodename = "node%d"
+        }""".format(host, idx, idx)) withFallback commonConfig
+  }
+}