Design and implement new hardware oob alerting for RDU3

CentOS Infra issue/request

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Issue Type

[] Issue - problem with something that was working
[] Feature Request - something you'd like us to add/modify/change
Task - mostly used by CentOS Infra team for day-to-day operations or bigger plans

Description

With recent machines now in RDU3, we need to implement some kind of different alerting mechanism as per network layout, OOB network is different and we can't reach it directly. We need to think about receiving alerts from OOB network, like through smtp relay (and ensure that rule is applied in DC firewall), but also new Dell 'Group Manager' to centralize settings, profiles, etc

Same for eventual internal http vhost on which we'd share the various firmware instead of uploading from remote (through vpn) laptops

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