send base product base version (bnc#873193)

remove build suffix from the version
changes
Merge pull request #52 from yast/base_product_version

Base product version
use suse-connect gem instead of scc_api
added "suse-connect" gem to Gemfile

to use at Travis builds
pass release_type product attribute (bnc#873194)
share creating the default suse-connect options
cleanup - add_product_services() is used just once
added test/registration_spec.rb
pass distro_target to suse-connect
pass email
exception handling
removed FATE#316796 placeholder
fixes to register the system and the base product
updated fake debugging product
load credentials from system if the system was already registered