[hpasm] fix add_copy_specs() use

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
[ipa] fix get_cmd_output_now usage

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
[veritas] fix call_ext_prog usage

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>