Support Client TLS

[HTHou]

1. Genarate keystore

keytool -genkeypair -alias mykey -keyalg RSA -validity 3650 -keystore .keystore -ext san=dns:localhost,ip:127.0.0.1

Notice: must add -ext san=ip or dns:<DN address> in your command.

2. Export certificate.cer file

keytool -export -alias mykey -keystore .keystore -rfc -file certificate.cer

3. Manually import the root certificate into the system's trust store.
4. Enable client SSL in IoTDB side.
5. Configurate TLS in Client side.

var sessionPool = new SessionPool.Builder()
                .SetNodeUrls(sessionPoolTest.nodeUrls)
                .SetUsername(sessionPoolTest.username)
                .SetPassword(sessionPoolTest.password)
                .SetUseSsl(true)
                .SetCertificatePath("/path/to/certificate.cer")
                .Build();

var tableSessionPool = new TableSessionPool.Builder()
                .SetNodeUrls(sessionPoolTest.nodeUrls)
                .SetUsername(sessionPoolTest.username)
                .SetPassword(sessionPoolTest.password)
                .SetUseSsl(true)
                .SetCertificatePath("/path/to/certificate.cer")
                .Build();