PvP tuning changes for week of 5/9

We're going to be making a few PvP tuning changes early next week, with a focus on Guardian Druids. Due to how close these changes will be to the next North American Qualifier tournament, we wanted to give everyone advanced warning. These changes are still in test (and could change), and will not be applied to live servers until Tuesday.

Demon Hunter - Havoc:
-Chaotic Onslaught can no longer cause Chaos Strike to trigger more than one additional Chaos Strike in PvP situations.
-Rain from Above will now properly suppress all root effects when cast, such as Frost Nova.

Druid - Guardian:
-Pawsitive Outlook can no longer cause Thrash to trigger more than one additional Thrash in PvP situations.
-Sharpened Claws increases Thrash and Swipe damage by 25%, down from 50%.
-Frenzied Regeneration now heals for 25% of damage taken in the last 5 seconds, down from 50%.
-PvP Template Agility reduced by 5%.
-PvP Template Stamina reduced by 5%.

Monk - Brewmaster:
-Stave Off can no longer cause Keg Smash to trigger more than one additional Keg Smash in PvP situations.

Warrior - Fury:
-Oathblood can no longer cause Bloodthirst to trigger more than one additional Bloodthirst in PvP situations.