use test specs to reduce same size (java resttempalte clients) #913

Job	Run time
Build Java Client JDK17 (samples/client/petstore/java/restclient)	2m 23s
Build Java Client JDK17 (samples/client/petstore/java/resttemplate-springBoot4-jackson3)	1m 39s
Build Java Client JDK17 (samples/client/petstore/java/restclient-nullable-arrays)	1m 35s
Build Java Client JDK17 (samples/client/petstore/java/webclient-jakarta)	1m 35s
Build Java Client JDK17 (samples/client/petstore/java/resttemplate-springBoot4-jackson2)	1m 45s
Build Java Client JDK17 (samples/client/others/java/webclient-sealedInterface_3_1)	1m 42s
Build Java Client JDK17 (samples/client/petstore/java/webclient-useSingleRequestParameter)	1m 42s
Build Java Client JDK17 (samples/client/others/java/restclient-enum-in-multipart)	1m 34s
Build Java Client JDK17 (samples/client/others/java/webclient-sealedInterface)	1m 35s
Build Java Client JDK17 (samples/client/petstore/java/restclient-useSingleRequestParameter-static)	2m 9s
Build Java Client JDK17 (samples/client/petstore/java/resttemplate-jakarta)	1m 45s
Build Java Client JDK17 (samples/client/petstore/java/restclient-swagger2)	2m 16s
Build Java Client JDK17 (samples/client/petstore/java/restclient-useSingleRequestParameter)	2m 21s
Build Java Client JDK17 (samples/client/petstore/java/restclient-springBoot4-jackson3)	1m 42s
Build Java Client JDK17 (samples/client/petstore/java/restclient-springBoot4-jackson2)	1m 52s
	27m 35s

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