Prepared code for parallel run

tests/spring-cloud-contract-stub-runner-amqp/src/test/resources/application.yml

@@ -2,4 +2,6 @@ stubrunner:
   repositoryRoot: classpath:m2repo/repository/
   ids: org.springframework.cloud.contract.verifier.stubs.amqp:spring-cloud-contract-amqp-test:0.4.0-SNAPSHOT:stubs
   amqp:
-    enabled: true
+    enabled: true
+server:
+  port: 0

tests/spring-cloud-contract-stub-runner-boot-eureka/src/test/resources/application.yml

@@ -2,3 +2,5 @@ stubrunner:
   camel.enabled: false
   idsToServiceIds:
     fraudDetectionServer: someNameThatShouldMapFraudDetectionServer
+server:
+  port: 0

tests/spring-cloud-contract-stub-runner-boot-zookeeper/src/test/resources/application.yml

@@ -2,3 +2,5 @@ stubrunner:
   camel.enabled: false
   idsToServiceIds:
     fraudDetectionServer: someNameThatShouldMapFraudDetectionServer
+server:
+  port: 0

tests/spring-cloud-contract-stub-runner-camel/src/test/resources/application.yml

@@ -1,2 +1,4 @@
 stubrunner.repositoryRoot: classpath:m2repo/repository/
-stubrunner.ids: org.springframework.cloud.contract.verifier.stubs:camelService
+stubrunner.ids: org.springframework.cloud.contract.verifier.stubs:camelService
+server:
+  port: 0

tests/spring-cloud-contract-stub-runner-integration/src/test/resources/application.yml

@@ -1,2 +1,4 @@
 stubrunner.repositoryRoot: classpath:m2repo/repository/
-stubrunner.ids: org.springframework.cloud.contract.verifier.stubs:integrationService:0.0.1-SNAPSHOT
+stubrunner.ids: org.springframework.cloud.contract.verifier.stubs:integrationService:0.0.1-SNAPSHOT
+server:
+  port: 0

tests/spring-cloud-contract-stub-runner-stream/src/test/resources/application.yml

@@ -8,4 +8,7 @@ spring:
         output:
           destination: returnBook
         input:
-          destination: bookStorage
+          destination: bookStorage
+
+server:
+  port: 0