Error creating Wildfly AS resource

[201-web-app-asev2-create](https://github.com/Azure/azure-quickstart-templates/tree/master/201-web-app-asev2-create)

### Issue Details

### Repro steps (*if necessary, delete otherwise*)

1. Create a new ASE v2.

1. Create a app service using the app service plan.

1. Change the app to be a Wildfly app by setting

```

javaVersion: "1.8"

javaContainer: "WILDFLY"

javaContainerVersion: "14.0"

```

Error:

{"Code":"BadRequest","Message":"The parameter javaContainer/javaContainerVersion has an invalid value.","Target":null,"Details":[{"Message":"The parameter javaContainer/javaContainerVersion has an invalid value."},{"Code":"BadRequest"},{"ErrorEntity":{"ExtendedCode":"01007","MessageTemplate":"The parameter {0} has an invalid value.","Parameters":["javaContainer/javaContainerVersion"],"Code":"BadRequest","Message":"The parameter javaContainer/javaContainerVersion has an invalid value."}}],"Innererror":null}

Similar issue as https://github.com/Azure/azure-quickstart-templates/issues/4020

Start with the 201-web-app-asev2-create template linked in the issue and reproduce the ASE v2 deployment steps with the listed Java and WildFly settings. Compare the failure with similar issue #4020; the issue is done when the template accepts the WildFly 14.0 configuration and creates the app successfully.

Written by the indexing model from the issue text.