2ZoneDataCenterHVAC_wEconomizer with ITE objects fails on annual run

[mjwitte]

In early June, east zone gets hot - chilled water coil is not keeping up, but not clear why. When this issue is addressed 2ZoneDataCenterHVAC_wEconomizer with have ElectricEquipment:ITE:AirCooled objects in place of plain ElectricEquipment objects, and it will run well for an annual simulation. Current state of 2ZoneDataCenterHVAC_wEconomizer put into defects folder for now, but should ultimately become the modified example file (test file). Annual version of the idf is the later one, changes here need to be merged back to the non-annual version.