timeout from 30 to 90 seconds
Merge pull request #160 from SUSE/review_140813_increase_test_timeouts_for_registration

[Review] Request from 'wstephenson' @ 'SUSE/connect/review_140813_increase_test_timeouts_for_registration'
Merge remote-tracking branch 'origin/master' into review_140813_small_connect_improvements_that_came_out_of_card_2149
fix architecture caching in tests
test for non existing instance data file
use class instance var
improve test for instance data not found