* fix InlineModelResolver's logis and use openapi-generator's InlineModelResolver, so that nested "required" works correctly
* add "required" to nested model schema
* update ensure-up-to-date to include openapi v3's jaxrs
* change test required field
* fix sample shell script, hide timestamp
* fix NPE
* move test case to petstore-with-fake-endpoints-models-for-testing.yaml
* fix jaxrs-jersey (oas3) example generate shell script to use petstore-with-fake-endpoints-models-for-testing.yaml
* add default value
* re-generate samples
