Increase number of concurrent requests that fiddlecli makes to fiddle.skia.org.

Bug: skia:
Change-Id: I6de7bfadf9c955f7c08c670164f78a988ab7ab9f
Reviewed-on: https://skia-review.googlesource.com/137860
Auto-Submit: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
5 files changed