Update mvn-integration script to swift4

Author: plam4u

samples/client/petstore/swift4/default/SwaggerClientTests/pom.xml

@@ -1,10 +1,10 @@
 <project>
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.swagger</groupId>
-    <artifactId>Swift3PetstoreClientTests</artifactId>
+    <artifactId>Swift4PetstoreClientTests</artifactId>
     <packaging>pom</packaging>
     <version>1.0-SNAPSHOT</version>
-    <name>Swift3 Swagger Petstore Client</name>
+    <name>Swift4 Swagger Petstore Client</name>
     <build>
         <plugins>
             <plugin>

samples/client/petstore/swift4/default/SwaggerClientTests/run_xcodebuild.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-xcodebuild clean build build-for-testing -workspace "SwaggerClient.xcworkspace" -scheme "SwaggerClient" -destination "platform=iOS Simulator,name=iPhone 6,OS=9.3" && xcodebuild test-without-building -workspace "SwaggerClient.xcworkspace" -scheme "SwaggerClient" -destination "platform=iOS Simulator,name=iPhone 6,OS=9.3" | xcpretty && exit ${PIPESTATUS[0]}
+xcodebuild clean build build-for-testing -workspace "SwaggerClient.xcworkspace" -scheme "SwaggerClient" -destination "platform=iOS Simulator,name=iPhone 11,OS=13.0" && xcodebuild test-without-building -workspace "SwaggerClient.xcworkspace" -scheme "SwaggerClient" -destination "platform=iOS Simulator,name=iPhone 11,OS=13.0" | xcpretty && exit ${PIPESTATUS[0]}