Returns reason on pkg update error (#44982)

Previously, it returned no additional information:

     "msg": "Could not update catalogue"

Now it passes that reason with the error message:

    {"changed": false, "msg": "Could not update catalogue [77]:  pkg: Insufficient privileges to update the repository catalogue.\n"}

lib/ansible/modules/packaging/os/pkgng.py

@@ -209,7 +209,7 @@ def install_packages(module, pkgng_path, packages, cached, pkgsite, dir_arg, sta
         else:
             rc, out, err = module.run_command("%s %s update" % (pkgng_path, dir_arg))
         if rc != 0:
-            module.fail_json(msg="Could not update catalogue")
+            module.fail_json(msg="Could not update catalogue [%d]: %s %s" % (rc, out, err))
 
     for package in packages:
         already_installed = query_package(module, pkgng_path, package, dir_arg)