Add HTTP protocol version to HTTP request message

[sebastian-nagel]

The request records in the CC-NEWS WARC files lack the HTTP protocol version:

GET /path 

instead of

GET /path HTTP/1.1

This makes some WARC parsers fail to process the WARC files, see https://groups.google.com/d/msg/common-crawl/hsb90GHq6to/Lv-9-nHAAQAJ.

[sebastian-nagel]

Fix in Stormcrawler (apache/incubator-stormcrawler#775) deployed to production, WARC files now contain the HTTP version in the request message.