etcdmain: deprecate 'ca-file' and 'peer-ca-file' flags

Has been deprecated since 2.1...

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

etcdmain/config.go

@@ -173,14 +173,12 @@ func newConfig() *config {
 	fs.UintVar(&cfg.cp.ProxyReadTimeoutMs, "proxy-read-timeout", cfg.cp.ProxyReadTimeoutMs, "Time (in milliseconds) for a read to timeout.")
 
 	// security
-	fs.StringVar(&cfg.ec.ClientTLSInfo.CAFile, "ca-file", "", "DEPRECATED: Path to the client server TLS CA file.")
 	fs.StringVar(&cfg.ec.ClientTLSInfo.CertFile, "cert-file", "", "Path to the client server TLS cert file.")
 	fs.StringVar(&cfg.ec.ClientTLSInfo.KeyFile, "key-file", "", "Path to the client server TLS key file.")
 	fs.BoolVar(&cfg.ec.ClientTLSInfo.ClientCertAuth, "client-cert-auth", false, "Enable client cert authentication.")
 	fs.StringVar(&cfg.ec.ClientTLSInfo.CRLFile, "client-crl-file", "", "Path to the client certificate revocation list file.")
 	fs.StringVar(&cfg.ec.ClientTLSInfo.TrustedCAFile, "trusted-ca-file", "", "Path to the client server TLS trusted CA cert file.")
 	fs.BoolVar(&cfg.ec.ClientAutoTLS, "auto-tls", false, "Client TLS using generated certificates")
-	fs.StringVar(&cfg.ec.PeerTLSInfo.CAFile, "peer-ca-file", "", "DEPRECATED: Path to the peer server TLS CA file.")
 	fs.StringVar(&cfg.ec.PeerTLSInfo.CertFile, "peer-cert-file", "", "Path to the peer server TLS cert file.")
 	fs.StringVar(&cfg.ec.PeerTLSInfo.KeyFile, "peer-key-file", "", "Path to the peer server TLS key file.")
 	fs.BoolVar(&cfg.ec.PeerTLSInfo.ClientCertAuth, "peer-client-cert-auth", false, "Enable peer client cert authentication.")