Add missing debug log for the cloudPayloadTaggingServices config (#8600)

Author: ygree

internal-api/src/main/java/datadog/trace/api/Config.java

@@ -4844,6 +4844,8 @@ public String toString() {
         + apmTracingEnabled
         + ", jdkSocketEnabled="
         + jdkSocketEnabled
+        + ", cloudPayloadTaggingServices="
+        + cloudPayloadTaggingServices
         + ", cloudRequestPayloadTagging="
         + cloudRequestPayloadTagging
         + ", cloudResponsePayloadTagging="