Add missing include in Cluster.pm

Michael Paquier <michael@paquier.xyz>

Commit: 81c0c77f27bf3ea4ff1ee2e85d782d4c73ff9161
Author: Michael Paquier <michael@paquier.xyz>
Date: 2026-05-12T07:44:33Z
Add missing include in Cluster.pm

The postmaster test 004_negotiate.pl could fail due to IO::Socket::INET
gone missing, in environments that cannot use Unix sockets.

Oversight in the backport done in 6dffaeb8e54c, so like the other commit
this is applied across the v14~17 range.  Per buildfarm member drongo.

Security: CVE-2026-6479
Backpatch-through: 14

Files

PathChange+/−
src/test/perl/PostgresNode.pm modified +1 −0