Fix test_events
Fix test_events

Make the error message regex more lenient so that it matches both
"certificate verify failed " and "CERTIFICATE_VERIFY_FAILED " as some
SSL libraries use different text than OpenSSL.

ajdavis/asyncio,Martiusweb/asyncio,vxgmichel/asyncio,Martiusweb/asyncio,ajdavis/asyncio,vxgmichel/asyncio,vxgmichel/asyncio,Martiusweb/asyncio,ajdavis/asyncio