wireless: updates to samples (suse, nanny, wicked)

- Adding new suse ifcfg-wlan0 template to host4
- Adding new wicked wlan0-multi.xml example with multiple
  networks'configuration
- Updating existing nanny and wicked wlan*.xml examples
  to match the schema with <network>
makefile: fix to create systemv dbus service files
Lease state dictates install or remove

Rely on lease state passed in from __ni_system_interface_update_lease()
to determine installation/removal of lease information from the system.
Additionally check the seqno of lease to only install the lease of
interest on update/new lease arrival.
[system_update] Streamline lease updates

- Perform updates as leases are passed to us from ifconfig.c:__ni_system_interface_update_lease().
- Don't disable an updater if an error during install/remove occurs.
makefile: fix to create systemv dbus service files [2]
Added ni_updater_source convenience functions
Added ni_updater_source_array and functions
Chaged updater to use updater source arrays
[system_update] Lease removal cleanup