change default encryption method of ss to chacha20-ietf-poly1305
change default encryption method of ss to chacha20-ietf-poly1305

MelvinTo/firewalla,firewalla/firewalla,firewalla/firewalla,MelvinTo/firewalla,MelvinTo/firewalla,MelvinTo/firewalla,firewalla/firewalla,firewalla/firewalla,firewalla/firewalla,MelvinTo/firewalla