labelsToTags(itemLabels) {
		const labels = Object.assign({}, this.defaultLabels || {}, itemLabels || {});
		const keys = Object.keys(labels);
		if (keys.length == 0) return [];

		return keys.map(
			key => `${this.formatLabelName(key)}:${this.escapeLabelValue(labels[key])}`
		);
	}
Convert labels to Prometheus label string

@param {Object} itemLabels
@returns {Array<String>}

@memberof DatadogReporter