[1tv] Support for livestream.

[ondentite]

• I've verified and I assure that I'm running youtube-dl 2017.12.14

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

C:\Users\User>youtube-dl -F https://www.1tv.ru/live
[generic] live: Requesting header
WARNING: Falling back on generic information extractor.
[generic] live: Downloading webpage
[generic] live: Extracting information
ERROR: Unsupported URL: https://www.1tv.ru/live

https://www.1tv.ru/live

It's geo-recticted.