add cmd_name argument to CompleteCommand
add cmd_name argument to CompleteCommand

Add the argument so callers will pass it.

Change-Id: Ic2144296de1840de75835eb89fd8145f5ef80e28
Signed-off-by: Doug Hellmann <0798ebecfb7bc4dfb9d0445c2fa030eb64e1fa1c@doughellmann.com>

dtroyer/cliff,openstack/cliff,dtroyer/cliff,openstack/cliff