com.vesoft.nebula.connector.NebulaConnectionConfig
build NebulaConnectionConfig
check if the connection config is valid
set ca sign param for ssl
set connectionRetry, connectionRetry is optional
set enableMetaSSL, enableMetaSSL is optional
set enableMetaSSL, enableMetaSSL is optional
set enableStorageSSL, enableStorageSSL is optional
set executeRetry, executeRetry is optional
set nebula graph server address, multi addresses is split by English comma
set nebula meta server address, multi addresses is split by English comma
set ssl sign type SSLSignType
set self sign param for ssl
set timeout, timeout is optional