apparmor is no longer found in Alpine edge/testing but in
edge/community, presumably in preparation for full-fledged inclusion in
3.15. If so, once that is released, BASEIMAGE can be updated again and
the explicit --repository flag to 'apk add' dropped.
Fixes: https://github.com/kubernetes/kubernetes/issues/105528
Windows images will require other base images, and thus, we will need
to explicitly specify the OS type a base image is for in order to
avoid confusion or errors.
Originally from:
https://github.com/kubernetes/contrib/tree/master/apparmor/loader
Moving the code here to prevent bit-rot and to be sure we can recreate
or update the images on demand. Moving it here also ensures we can use
the common harness to build the multi-arch manifests needed for running
the apparmor e2e test can run on multiple architectures.
Change-Id: Idece17c494fc944c0aaef64805d2f0e3c4d7fb28
