python-smartpm: fix option typo of command channel
When run smart, it fails:
root@qemu1:~# smart channel --remove-all
error: No action specified for command 'channel'
If no default value of arg 'dest' is provided in method add_option() of
optparse.OptionParser, it replaces hyphen('-') in new added option with
underscore('_') as dest.
In function ensure_action() it checks action strings with options from
optparse.OptionParser. So it is 'remove_all' which need to be checked
rather than 'remove-all'.
Signed-off-by: Kai Kang <kai.kang@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com>