code: static String getServiceNameFromEnv() {
          String serviceName = PropertyUtil.getProperty(PropertyUtil.HAWKULAR_APM_SERVICE_NAME);
          if (null == serviceName || serviceName.isEmpty()) {
              String buildStamp = getBuildStampFromEnv();
              if (null != buildStamp && !buildStamp.isEmpty()) {
                  return getServiceFromBuildName(buildStamp);
              }
              return null;
          }
          return serviceName;
      }
docs: The Service Name for this deployment, based on either an explicit service name property, or based
  on environmental data, such as OpenShift build name/namespace.
  
  @return the service name to include on the trace context