detect raid containers differently
detect raid containers differently

via "super external:ddf" or "super external:imsm"
not by unknown raid type, which also happens for inactive raids

openSUSE/libstorage-bgl-eval,aschnell/libstorage-bgl-eval,aschnell/libstorage-bgl-eval,openSUSE/libstorage-bgl-eval,openSUSE/libstorage-bgl-eval,openSUSE/libstorage-bgl-eval,aschnell/libstorage-bgl-eval,aschnell/libstorage-bgl-eval,openSUSE/libstorage-bgl-eval,aschnell/libstorage-bgl-eval