disable authentication by default
disable authentication by default

See rhbz #873230

Make initially created TPGs not use authentication.

Signed-off-by: Andy Grover <b7d524d2f5cc5aebadb6b92b08d3ab26911cde33@redhat.com>

cloud4life/targetcli-fb,cvubrugier/targetcli-fb,agrover/targetcli-fb