KCC: Reduce brokenness of samba.kcc module

KCC: Reduce brokenness of samba.kcc module

This module is still not being used, and is being fixed slowly to make
it clear what is happening. Here we remove references to globals in
the samba_kcc script (notably opts), and instead add the various
options as KCC.__init__ arguments.

There is more to come.

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>