fix ignores

Author: laurit

javaagent-tooling/src/main/java/io/opentelemetry/javaagent/tooling/ignore/AdditionalLibraryIgnoredTypesConfigurer.java

@@ -192,6 +192,7 @@ public void configure(IgnoredTypesBuilder builder) {
 
     builder
         .ignoreClass("org.springframework.web.")
+        .allowClass("org.springframework.web.client.RestTemplate")
         .allowClass("org.springframework.web.servlet.")
         .allowClass("org.springframework.web.filter.")
         .allowClass("org.springframework.web.multipart.")