Switch to Mega progress reports

This wget line added 4,000 (about 7%) lines to our console log, being the most
common file checked by devs 4k lines of less scrolling is worth it. Also I'm
sure logstash will be a little happier too.

Change-Id: I9bca253a7582a0aaba677ae4d91f16287326d7a0
Merge "Switch to Mega progress reports"