Prepare new host for lookaside cache server
Part of the migration to gitlab : git.centos.org is actually hosting lookaside content (under https://git.centos.org/sources) and when we'll announce the migration, we should still have a dedicated server, also answering on git.centos.org Alias (added in the TLS SAN) to ensure smooth migration and also not blocking workflow for people downloading straight from git.centos.org/sources to rebuild src.rpm (including but not limited to SIGs building in cbs.centos.org) Let's deploy new host already that will be ready, but just not pushed with A/AAAA dns records for git.centos.org Let's also keep in sync lookaside cache content to pull from main machine and that will be just a DNS push away for when we'll sunset pagure instance
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