sentinel.go
func (s *Slave) Available() bool {
	return !strings.Contains(s.flags, "disconnected") && !strings.Contains(s.flags, "s_down")
}
func (s *Slave) Available() bool {
	return !strings.Contains(s.flags, "disconnected") && !strings.Contains(s.flags, "s_down")
}
// Available returns if slave is in working state at moment based on information in slave flags.