Make subscription tests pass with log_error_verbosity=verbose

Andrew Dunstan <andrew@dunslane.net>

Commit: 19408aae7fa2bf28866fb262b27f08405e71152e
Author: Andrew Dunstan <andrew@dunslane.net>
Date: 2022-06-12T13:17:17Z
Releases: 15.0
Make subscription tests pass with log_error_verbosity=verbose

Recent additions to the subscription tests check for log entries, but
fail to account for the possible presence of an SQL errror code, which
happens if log_error_verbosity is set to 'verbose'. Add this into the
regular expressions that are checked for.

Files