acu119726 - Fix Activity stats avg_rate calculation
Merge pull request #96 from rightscale/cornsilk_13_12_acu119726_stats_avg_rate

acu119726 - Fix Activity stats avg_rate calculation
Merge branch 'master' into teal_13_11_acu118023_global_session_v3
acu118023 bump version to 2.8.2 since 2.8.1 was published from master