// `RELEASE.2017-09-29T19-16-56Z`
func releaseTimeToReleaseTag(releaseTime time.Time) string {
	return "RELEASE." + releaseTime.Format(MinioReleaseTagTimeLayout)
}

// releaseTagToReleaseTime - reverse of `releaseTimeToReleaseTag()`
func releaseTagToReleaseTime(releaseTag string) (releaseTime time.Time, err error) {
	fields := strings.Split(releaseTag, ".")
	if len(fields) < 2 || len(fields) > 4 {