rapid-cdn: fix failing test
logrotate test for the rapid-cdn SR have been failing for quite some time because of a squid.log file created (and henceforth rotated) on any slave instance of the CDN:
Traceback (most recent call last):
self.assertEqual(
AssertionError: Items in the second set but not the first:
'squid.log_10.0.160.212.20240306.23h57m09s-20240307.00h00m02s.old.xz'Since we do not want to test this file in that specific test, we instead loosely check the content of the rotated files directory. In other words, we check for the presence of the two files to be tested, but avoid failing if other files exist.
This goes in line with the two following lines of that same test, loosely checking for file absence instead of an empty directory.