Added logic to conditional @JsonIgnoreProperties annotation. Invented new boolean value "useJsonIgnores", default true. if it remains the default true value @JsonIgnoreProperties will appear to the discriminator values in the generated objects, if set to false the @JsonIgnoreProperties will not appear in the generated code.

Added logic to conditional @JsonIgnoreProperties annotation. Invented new boolean value "useJsonIgnores", default true. if it remains the default true value @JsonIgnoreProperties will appear to the discriminator values in the generated objects, if set to false the @JsonIgnoreProperties will not appear in the generated code. #489