testing/9base: compile on all architectures

Also fix abuild lint issues.

Closes #10855
5 jobs for !297 with 9base-wreck in 1 minute and 24 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
failed #2323
docker-alpine x86_64 allowed to fail
lint

00:00:17

 
  Build
failed #2327
docker-alpine ci-build ppc64le
build-ppc64le

00:00:36

failed #2326
docker-alpine ci-build s390x
build-s390x

00:00:31

passed #2325
docker-alpine ci-build x86
build-x86

00:01:05

passed #2324
docker-alpine ci-build x86_64
build-x86_64

00:01:01

 
Name Stage Failure
failed
lint Lint
No job log
failed
build-s390x Build
No job log
failed
build-ppc64le Build
No job log