Rewrite itctl to use urfave/cli instead of spf13/cobra

cmd/itctl/set.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"time"
+
+	"github.com/urfave/cli/v2"
+)
+
+func setTime(c *cli.Context) error {
+	// Ensure required arguments
+	if c.Args().Len() < 1 {
+		return cli.Exit("Command time requires one argument", 1)
+	}
+
+	if c.Args().Get(0) == "now" {
+		return client.SetTimeNow()
+	} else {
+		parsed, err := time.Parse(time.RFC3339, c.Args().Get(0))
+		if err != nil {
+			return err
+		}
+		return client.SetTime(parsed)
+	}
+}