ci: workaround for centos stream 8 being EOLed

[kolyshkin]

CS8 is EOL. As a temp workaround, fix repo URLs to point to vault.

[AkihiroSuda]

DCO check is hanging 🤔

[thaJeztah]

DCO check is hanging 🤔

Oh, I saw someone else mention that for another repository; perhaps some outage on GitHub?

Do we need to keep the stream-8, or should we just remove it? (Or is it purely an approximation for "RHEL 8" here?)

[AkihiroSuda]

Do we need to keep the stream-8, or should we just remove it? (Or is it purely an approximation for "RHEL 8" here?)

Let's keep it for now, this is an approximation for Rocky/Alma/Oracle Linux 8 too.

[thaJeztah]

Yeah, probably ok for now; CentOS 7 will be EOL soon as well (but IIRC, so will RHEL 7, so ..)

For the DCO check; looks like it's currently broken; also running into that in other repositories now 😞

[thaJeztah]

LGTM

[thaJeztah]

DCO ticket;

• DCO check stays as expected dcoapp/app#211

[AkihiroSuda]

Let's merge this to unblock other PRs