types: do not load storage.conf at init time
types: do not load storage.conf at init time

Using init in libs is bad. init() has to be run every time the
application which imports this package starts. This slows down startup
time even if the application will never use this code path.

Instead use a sync.Once to only the config when it is required.

Signed-off-by: Paul Holzinger <f1d90b51f8389bff6167e11781e462f44a71d746@redhat.com>

containers/storage,containers/storage,containers/storage