Hide the value of --etcd-password when starting meta node with arguments

[arkbriar]

Is your feature request related to a problem? Please describe.

Meta prints the following log when I started it with etcd. I think we should hide it when printing to the log.

2023-10-23T08:51:54.600602553Z  INFO risingwave_cmd_all::standalone: starting meta-node thread with cli args: ["meta-node", "--listen-addr", "127.0.0.1:5690", "--advertise-addr", "127.0.0.1:5690", "--dashboard-host", "0.0.0.0:5691", "--prometheus-host", "0.0.0.0:1250", "--state-store", "hummock+memory", "--data-directory", "hummock", "--config-path", "/risingwave/config/risingwave.toml", "--backend", "etcd", "--etcd-endpoints", "etcd.default.svc:2379", "--etcd-auth", "--etcd-username", "root", "--etcd-password", "q2mqOcMrjU"]

Describe the solution you'd like

Hide the values with *, for example, or else omit it.

"meta-node", "--listen-addr", "127.0.0.1:5690", "--advertise-addr", "127.0.0.1:5690", "--dashboard-host", "0.0.0.0:5691", "--prometheus-host", "0.0.0.0:1250", "--state-store", "hummock+memory", "--data-directory", "hummock", "--config-path", "/risingwave/config/risingwave.toml", "--backend", "etcd", "--etcd-endpoints", "etcd.default.svc:2379", "--etcd-auth", "--etcd-username", "root", "--etcd-password", "********"

Describe alternatives you've considered

No response

Additional context

No response

[xiangjinwu]

related: #12673