main/linux-lts: enable anbox support

for the 3 architectures in linux-lts supported by anbox, that is,
armv7, aarch64 and x86_64.
[ci:skip-lint]: this is not the place to fix linux-lts linting issues
7 jobs for !3848 with anbox in 1 minute and 24 seconds
latest detached
Status Job ID Name Coverage
  Lint
failed #52888
docker-alpine x86_64 allowed to fail
lint

00:00:27

 
  Build
failed #52893
docker-alpine ci-build aarch64
build-aarch64

00:00:32

failed #52894
docker-alpine ci-build armv7
build-armv7

00:00:39

failed #52892
docker-alpine ci-build ppc64le
build-ppc64le

00:00:54

failed #52891
docker-alpine ci-build s390x
build-s390x

00:00:44

failed #52890
docker-alpine ci-build x86
build-x86

00:00:56

failed #52889
docker-alpine ci-build x86_64
build-x86_64

00:00:53

 
Name Stage Failure
failed
lint Lint
No job log
failed
build-aarch64 Build
No job log
failed
build-armv7 Build
No job log
failed
build-s390x Build
No job log
failed
build-x86_64 Build
No job log
failed
build-x86 Build
No job log
failed
build-ppc64le Build
No job log