Test certificates expire in 2032

[ms-jcorley]

Describe the bug
There are certificates files used by tests which expire in 2032. Example: config/configgrpc/testdata/ca.crt
While 8 years is clearly not an emergency, it may be prudent to re-create these with a much longer timeframe (100 years?) to avoid an unnecessary scramble when that date is near. Another option is to have the tests generate these certificates at run time.

Steps to reproduce
Double click on config/configgrpc/testdata/ca.crt and notice the expiration date.

What did you expect to see?
An expiration date long after we are all dead.

What did you see instead?
A time bomb with a long fuse.

What version did you use?
main as of 2024/11/8

[dmathieu]

I don't know if this really matters that much. This is a test certificate.
The worst that can happen in 2032 is that CI fails until someone renews the certificate.