Bug 972770 - Use a page with a TLS 1.0 certificate while 1.2 enforced to test 'Error Page'. r=amatei

--HG--
branch : mozilla-esr31
extra : transplant_source : %AE%5D%27W%F3G%92Kc%83%8C%86%85%3F%5D%17G%91%BA%10