[Jenkins-infra] So that was a funny ci.jenkins.io outage

[R. Tyler Croy]

abayer gets a golden rubber chicken for today

    03:58 @<abayer> rtyler: something is awry with creds on ci.jenkins.io for Azure - see https://gist.github.com/abayer/88b3d5344ed95ad64bb5e83eb6b48cb1 e.g.
    03:58 @<abayer> So instances aren't getting deleted. Not sure what else is borked by that, but I'm guessing it's probably causing other errors.
    04:00 @<abayer> Yup, errors validating VM images, timeouts creating instances...


As a bunch of smashing around on my part, I discovered the real issue (in the
last place I looked!) was that Azure AD Application credentials are created
with a 365 day expiry.

As it turns out, I originally provisioned our Azure integration in
ci.jenkins.io on December 7th 2016.


I have created a key without an expiry for the AAD service principal for now. I
need to discuss with olblak how we should handle some of these grants we have
running around for Terrorform.



Cheers
- R. Tyler Croy

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