Cookie.SetDomain() failed, invalid domain: {0}

[wangdongdong520]

when i upgrade cefpython3==66.1 , then i find SetDomain error with “Cookie.SetDomain() failed, invalid domain: {0}”。so you add regexp test domin is right，but regexp is not perfect 。 It shouldn't be /^(?:a-z0-9?.)[a-z0-9][a-z0-9-_]{0,61}[a-z]$/ it should support IP

[cztomczak]

Can you send a pull request? Thank you.

[wangdongdong520]