refactor(AbstractRestClientTool): use existing method

solidify-rest-client/src/main/java/ch/unige/solidify/util/AbstractRestClientTool.java

@@ -73,7 +73,7 @@ public abstract class AbstractRestClientTool {
             .setAccept(Arrays.asList(MediaType.APPLICATION_OCTET_STREAM, MediaType.ALL));
     final RestTemplate restTemplate;
     if (tokenUsage == TokenUsage.WITH_TOKEN) {
-      restTemplate =  this.getRestTemplateBuilder().build();
+      restTemplate =  this.getClient();
     } else if (tokenUsage == TokenUsage.WITHOUT_TOKEN) {
       restTemplate = new RestTemplateBuilder().build();
     } else {