smt-client: take config file name from constant
smt-client: adaptions for SLE12: read SUSEConnect config, drop hardware inventory feature

To adapt smt-client for SLE12 the hardware inventory feature
of the inventory job had to dropped. It relied on suseRegister,
which is not available for SLE12.
For the same reason the config file to be read changed from
 /etc/suseRegister.conf  to /etc/SUSEConnect
changes and new version 1.0.0