cli_rs: explicit annotation of subcommand help text

Summary:
Comments affecting runtime behavior disturbs me, so use explicit
structopt annotations on help text. And move those annotations to the
command implementations.

Reviewed By: fanzeyi

Differential Revision: D26412452

fbshipit-source-id: 066dfdd1c54254bae4bd2af65031487b7a1094da

eden/fs/cli_rs/edenfs-commands/src/lib.rs

@@ -59,14 +59,9 @@ pub struct Command {
 
 #[derive(StructOpt, Debug)]
 pub enum SubCommand {
-    /// Check the health of the Eden service
     #[structopt(alias = "health")]
     Status(crate::status::StatusCmd),
-
-    /// Print the daemon's process ID if running
     Pid(crate::pid::PidCmd),
-
-    /// Determine uptime of running edenfs daemon
     Uptime(crate::uptime::UptimeCmd),
 }
 

eden/fs/cli_rs/edenfs-commands/src/pid.rs

@@ -15,6 +15,7 @@ use edenfs_client::EdenFsInstance;
 use crate::ExitCode;
 
 #[derive(StructOpt, Debug)]
+#[structopt(about = "Print the daemon's process ID if running")]
 pub struct PidCmd {}
 
 impl PidCmd {

eden/fs/cli_rs/edenfs-commands/src/status.rs

@@ -17,6 +17,7 @@ use edenfs_client::{DaemonHealthy, EdenFsInstance};
 use crate::ExitCode;
 
 #[derive(StructOpt, Debug)]
+#[structopt(about = "Check the health of the Eden service")]
 pub struct StatusCmd {
     /// Wait up to TIMEOUT seconds for the daemon to respond
     #[structopt(long, default_value = "3")]

eden/fs/cli_rs/edenfs-commands/src/uptime.rs

@@ -17,6 +17,7 @@ use edenfs_client::{DaemonHealthy, EdenFsInstance};
 use crate::ExitCode;
 
 #[derive(StructOpt, Debug)]
+#[structopt(about = "Determine uptime of running edenfs daemon")]
 pub struct UptimeCmd {}
 
 struct HumanTime {