Add glibc-langpack-en requirement

[sandrobonazzola]

Changes introduced with this PR

Installing on a clean system with Italian locale, engine-setup fails with:

[ INFO  ] Initializing PostgreSQL
[ INFO  ] Creating PostgreSQL 'engine' database
[ ERROR ] Failed to execute stage 'Misc configuration': ERRORE:  nome locale non valido "en_US.UTF-8"

[ INFO  ] DNF Performing DNF transaction rollback
[ INFO  ] DNF Repository copr:copr.fedorainfracloud.org:ovirt:ovirt-master-snapshot is listed more than once in the configuration
[ INFO  ] Stage: Clean up
          Log file is located at /var/log/ovirt-engine/setup/ovirt-engine-setup-20230420105508-xx23f2.log
[ INFO  ] Generating answer file '/var/lib/ovirt-engine/setup/answers/20230420105553-setup.conf'
[ INFO  ] Stage: Pre-termination
[ INFO  ] Stage: Termination
[ ERROR ] Execution of setup failed

Requiring glibc-langpack-en in order to ensure "en_US.UTF-8" locale exists.

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y

[sandrobonazzola]

/ost