Move sample-spec to java folder

Author: sermler

bin/configs/java-resttemplate-additonal-properties-in-multipart-request-issue.yaml

@@ -1,7 +1,7 @@
 generatorName: java
 outputDir: samples/client/others/java/resttemplate-additonal-properties-in-multipart-request-issue
 library: resttemplate
-inputSpec: modules/openapi-generator/src/test/resources/3_0/java/resttemplate/additonal-properties-in-multipart-request-issue.yaml
+inputSpec: modules/openapi-generator/src/test/resources/3_0/java/additonal-properties-in-multipart-request-issue.yaml
 templateDir: modules/openapi-generator/src/main/resources/Java
 additionalProperties:
   artifactId: additonal-properties-in-multipart-request-issue