[jaxsrs-spec] Support additional properties with composed schema #672

Job	Run time
Build JAX-RS (samples/server/petstore/jaxrs-spec)	38s
Build JAX-RS (samples/server/petstore/jaxrs/jersey2-useTags)	43s
Build JAX-RS (samples/server/petstore/jaxrs-jersey)	46s
Build JAX-RS (samples/server/petstore/jaxrs-spec)	41s
Build JAX-RS (samples/server/petstore/jaxrs-spec-interface)	37s
Build JAX-RS (samples/server/petstore/jaxrs/jersey2)	49s
Build JAX-RS (samples/server/petstore/jaxrs-spec-interface-response)	34s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/eap-java8)	36s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/joda)	41s
Build JAX-RS (samples/server/petstore/jaxrs-spec-interface)	43s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/default)	53s
Build JAX-RS (samples/server/petstore/jaxrs-jersey)	47s
Build JAX-RS (samples/server/petstore/jaxrs-spec-interface-response)	42s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/eap)	34s
Build JAX-RS (samples/server/petstore/jaxrs-cxf-annotated-base-path)	57s
Build JAX-RS (samples/server/petstore/jaxrs-cxf-non-spring-app)	50s
Build JAX-RS (samples/server/petstore/jaxrs-resteasy/eap-joda)	38s
Build JAX-RS (samples/server/petstore/jaxrs-spec-microprofile-openapi-annotations)	45s
Build JAX-RS (samples/server/petstore/jaxrs-cxf-cdi)	46s
Build JAX-RS (samples/server/petstore/jaxrs-datelib-j8)	30s
Build JAX-RS (samples/server/petstore/jaxrs-cxf)	48s
	14m 58s

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