Add a simple test of device discovery during startup
Add a simple test of device discovery during startup

Both encrypted and unencrypted should succeed. The reason is that, since
the devices are not destroyed, and LUKS detection is not supported yet,
only the logical devices will be discovered and these will be assembled in
the normal way.

Signed-off-by: mulhern <7b51bcf507bcd7afb72bf8663752c0ddbeb517f6@redhat.com>

stratis-storage/stratisd,stratis-storage/stratisd,stratis-storage/stratisd