Change pom.xml and add .gitignore for private use.
Merge ApiListing in swagger-jersey2-jaxrs

If there are two @Api("myApis") annotation, the final ApiListing will
only show APIs from one class. The merge logic is available in
swagger-jaxrs. The change copied the logic from swagger-jaxrs.
Fix the property ordering issue in swagger.
Add more hooks to allow the caller change types of final API.
Respect @JsonProperty("rename") on fields.