Quote role name in test/authentication/t/003_peer.pl

Hi,

I noticed that test/authentication/t/003_peer.pl can fail when the system_user
name contains characters that require quoting in SQL, such as a hyphen.

The test creates a role using a name derived from the OS user:

$node->safe_psql('postgres', "CREATE ROLE $mapped_name LOGIN");

If $mapped_name contains a hyphen, this results in a syntax error.
The attached patch fixes this by properly quoting the role name:

$node->safe_psql('postgres', "CREATE ROLE \"$mapped_name\" LOGIN");

Regards,

Yugo Nagata

--
Yugo Nagata <nagata(at)sraoss(dot)co(dot)jp>