chore(shortcuts): update shortcuts

Author: jianxiaoguo

cli/cli.go

@@ -4,6 +4,7 @@ package cli
 var Shortcuts = map[string]string{
 	"create":   "apps:create",
 	"destroy":  "apps:destroy",
+	"exec":     "ps:exec",
 	"info":     "apps:info",
 	"login":    "auth:login",
 	"logout":   "auth:logout",

cmd/shortcuts_test.go

@@ -9,6 +9,7 @@ func TestShortcutsList(t *testing.T) {
 
 	expected := `create -> apps:create
 destroy -> apps:destroy
+exec -> ps:exec
 info -> apps:info
 login -> auth:login
 logout -> auth:logout