comment out swift test due to build image changes

Author: wing328

pom.xml

@@ -860,12 +860,14 @@
                 <module>samples/client/petstore/typescript-jquery/npm</module>-->
                 <module>samples/client/petstore/typescript-angular-v2/npm</module>
                 <module>samples/client/petstore/typescript-angular-v4/npm</module>
+                <!-- comment out due to https://github.com/swagger-api/swagger-codegen/issues/6658
                 <module>samples/client/petstore/swift3/default/SwaggerClientTests</module>
                 <module>samples/client/petstore/swift3/promisekit/SwaggerClientTests</module>
                 <module>samples/client/petstore/swift3/rxswift/SwaggerClientTests</module>
                 <module>samples/client/petstore/swift/default/SwaggerClientTests</module>
                 <module>samples/client/petstore/swift/promisekit/SwaggerClientTests</module>
                 <module>samples/client/petstore/swift/rxswift/SwaggerClientTests</module>
+                -->
                 <!-- comment out objc tests as it's timing out
                 <module>samples/client/petstore/objc/default/SwaggerClientTests</module>
                 <module>samples/client/petstore/objc/core-data/SwaggerClientTests</module>-->