Fixes bug 970406 - request ADI/blocklist ping data from Hive daily
* adds new crontabber job: fetch_adi_from_hive
* adds pyhs2 dependency
* adds a new table for raw log aggregate data
Migration for bug 970406
Fixes bug 970406 r=peterbe
Merge pull request #2102 from selenamarie/bug970406-pull-adi-crontabber

Fixes bug 970406 - pull ADI/blocklist pings from Hive with crontabber