Implement CLI status command

src/cli.cpp

@@ -86,6 +86,9 @@ void cli_tool_t::help()
         "(c) Vitaliy Filippov, 2019+ (VNPL-1.1)\n"
         "\n"
         "USAGE:\n"
+        "%s status\n"
+        "  Show cluster status\n"
+        "\n"
         "%s df\n"
         "  Show pool space statistics\n"
         "\n"
@@ -155,7 +158,7 @@ void cli_tool_t::help()
         "  --no-color          Disable colored output\n"
         "  --json              JSON output\n"
         ,
-        exe_name, exe_name, exe_name, exe_name, exe_name, exe_name,
+        exe_name, exe_name, exe_name, exe_name, exe_name, exe_name, exe_name,
         exe_name, exe_name, exe_name, exe_name, exe_name, exe_name
     );
     exit(0);
@@ -266,6 +269,11 @@ void cli_tool_t::run(json11::Json cfg)
         fprintf(stderr, "command is missing\n");
         exit(1);
     }
+    else if (cmd[0] == "status")
+    {
+        // Show cluster status
+        action_cb = start_status(cfg);
+    }
     else if (cmd[0] == "df")
     {
         // Show pool space stats
@@ -340,6 +348,8 @@ void cli_tool_t::run(json11::Json cfg)
     ringloop = new ring_loop_t(512);
     epmgr = new epoll_manager_t(ringloop);
     cli = new cluster_client_t(ringloop, epmgr->tfd, cfg);
+    // Smaller timeout by default for more interactiveness
+    cli->st_cli.etcd_slow_timeout = cli->st_cli.etcd_quick_timeout;
     cli->on_ready([this]()
     {
         // Initialize job