Update Http.request in default.rb to include a delay in retries

Update Http.request to include a sleep between retries for cases where Errno::ECONNABORTED, Errno::ECONNRESET, Errno::EADDRINUSE occur.   Without this sleep the retries happen immediately and do not give the remote host and/or connection to it, any time to resolve the connection issue.  This results in seemingly random connection problems and test failures when using Selenium Webdriver in a grid setup with 1000s of connections running simultaneously.

Signed-off-by: Alex Rodionov <p0deje@gmail.com>

Author: Aaron McKinley

rb/lib/selenium/webdriver/remote/http/default.rb

@@ -84,7 +84,7 @@ def request(verb, url, headers, payload, redirects = 0)
               # http://msdn.microsoft.com/en-us/library/aa560610%28v=bts.20%29.aspx
               raise if retries >= MAX_RETRIES
               retries += 1
-
+              sleep 2
               retry
             rescue Errno::EADDRNOTAVAIL => ex
               # a retry is sometimes needed when the port becomes temporarily unavailable