fixed spec/features/u2f_spec.rb
fixed spec/features/u2f_spec.rb

a lot of failures where because everything happens faster than rspec can
detect on the page

axilleas/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,dreampet/gitlab,axilleas/gitlabhq,jirutka/gitlabhq,iiet/iiet-git,iiet/iiet-git,stoplightio/gitlabhq,dreampet/gitlab,axilleas/gitlabhq,jirutka/gitlabhq,iiet/iiet-git,mmkassem/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,mmkassem/gitlabhq,jirutka/gitlabhq,axilleas/gitlabhq