Allow to not sign tarball in oasis-dist.
Allow to not sign tarball in oasis-dist.

jpdeplaix/oasis,gerdstolpmann/oasis,RadicalZephyr/oasis,gerdstolpmann/oasis,Chris00/oasis,jpdeplaix/oasis,diml/oasis,Chris00/oasis,madroach/oasis,gerdstolpmann/oasis,diml/oasis,jpdeplaix/oasis,RadicalZephyr/oasis,Chris00/oasis,madroach/oasis