Use the mirror.pkgbuild.com mirror for all builds

Builds fails from time to time, often due to a out-of-sync or broken
mirror. So let's switch to a reliable™ mirror managed by us instead of
rolling the dice on every build.
8 jobs for mirrors in 23 seconds (queued for 353 minutes and 13 seconds)
latest
Status Name Job ID Coverage
  Lint
passed flake8 #2423

00:00:20

passed shellcheck #2420

00:00:23

passed shfmt #2421

00:00:18

passed validate-packer #2424

00:00:18

passed yapf #2422

00:00:14

 
  Build
failed build:cloud-qemu #2425
secure-kvm

failed build:vagrant-qemu #2426
secure-kvm

failed build:vagrant-virtualbox #2427
secure-virtualbox

 
Name Stage Failure
failed
build:vagrant-virtualbox Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
build:vagrant-qemu Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
build:cloud-qemu Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log