Fix ServiceNameCacheGuavaService split error

apm-collector/apm-collector-cache/collector-cache-guava-provider/src/main/java/org/apache/skywalking/apm/collector/cache/guava/service/ServiceNameCacheGuavaService.java

@@ -74,7 +74,7 @@ public class ServiceNameCacheGuavaService implements ServiceNameCacheService {
 
     public String getSplitServiceName(String serviceName) {
         if (StringUtils.isNotEmpty(serviceName)) {
-            String[] serviceNames = serviceName.split(Const.ID_SPLIT);
+            String[] serviceNames = serviceName.split(Const.ID_SPLIT, 2);
             if (serviceNames.length == 2) {
                 return serviceNames[1];
             } else {