removing some server calls
Modified cert_sorter constructor Added lazy loading
Cleaner lazy loading
sorter now uses proxy options from cli
added uep provider
changed uep_factory to cp_provider
Lazyloader passes init arguments to load
updated spec with new files
corrected cp connection naming scheme
removed on_register callback. on_identity_change does the same
removed 'uep' from sorter.  holds provider now
added cp_provider doc strings, modified test fixture
Merge pull request #646 from candlepin/ckozak/cert_sorter_time

CertSorter optimization.