Fix CI catalog job error
from https://0xacab.org/varac/platform/builds/12540:
[INFO] Using puppet 3.8.7
[FAILED] default (compile time: 13.967425463 seconds)
----------------------------------------
Compiled 1 catalogs in 14.0431 seconds (avg: 14.0431 seconds)
1 test cases failed.
[F] default:
File[/etc/apt/sources.list] has notify relationship to invalid resource Exec[apt_updated]
1 / 1 FAILED