[Akka-Scala] This is a fix to a bug introduced by this PR #7172 (#7228)

* Add missing import

* Update petstore app

Author: ramzimaalej

modules/swagger-codegen/src/main/resources/akka-scala/apiInvoker.mustache

@@ -33,7 +33,7 @@ import spray.httpx.encoding.{Deflate, Encoder, Gzip}
 import spray.httpx.unmarshalling._
 import spray.io.ClientSSLEngineProvider
 
-import scala.concurrent.{ExecutionContext, Future}
+import scala.concurrent.{ExecutionContext, ExecutionContextExecutor, Future}
 import scala.reflect.ClassTag
 import scala.util.control.NonFatal
 

samples/client/petstore/akka-scala/README.md

@@ -10,7 +10,7 @@ Automatically generated by the [Swagger Codegen](https://github.com/swagger-api/
 
 - API version: 1.0.0
 - Package version: 
-- Build date: 2017-11-29T09:41:04.759-08:00
+- Build date: 2017-12-20T09:35:05.126-08:00
 - Build package: io.swagger.codegen.languages.AkkaScalaClientCodegen
 
 # Requirements

samples/client/petstore/akka-scala/build.sbt

@@ -1,26 +1,21 @@
-version       := "1.0.0"
-
-name          := "scala-akka-petstore-client"
-
-organization  := "io.swagger"
-
-scalaVersion  := "2.11.8"
+version := "1.0.0"
+name := "scala-akka-petstore-client"
+organization := "io.swagger"
+scalaVersion := "2.11.12"
 
 libraryDependencies ++= Seq(
   "io.swagger" % "swagger-core" % "1.5.15",
-  "com.typesafe" % "config" % "1.2.1",
-  "com.typesafe.akka" % "akka-actor_2.10" % "2.3.9",
+  "com.typesafe" % "config" % "1.3.2",
+  "com.typesafe.akka" %% "akka-actor" % "2.5.8",
   "io.spray" % "spray-client" % "1.3.1",
-  "joda-time" % "joda-time" % "2.2",
-  "org.joda" % "joda-convert" % "1.2",
-  "org.json4s" % "json4s-jackson_2.10" % "3.2.11",
-  "org.scalatest" %% "scalatest" % "2.2.4" % "test",
-  "junit" % "junit" % "4.8.1" % "test"
+  "joda-time" % "joda-time" % "2.9.9",
+  "org.joda" % "joda-convert" % "1.9.2",
+  "org.json4s" %% "json4s-jackson" % "3.5.3",
+  "org.scalatest" %% "scalatest" % "3.0.4" % "test",
+  "junit" % "junit" % "4.12" % "test"
 )
 
-resolvers ++= Seq(
-  Resolver.mavenLocal
-)
+resolvers ++= Seq(Resolver.mavenLocal)
 
 scalacOptions := Seq(
   "-unchecked",
@@ -29,4 +24,3 @@ scalacOptions := Seq(
 )
 
 publishArtifact in (Compile, packageDoc) := false
-