increase temperature output dp to 3 for calculator XML.

phasecalculator/classes/temperature.py

phasecalculator/test/classestest/phasestest.py

phasecalculator/test/classestest/phasetest.py

phasecalculator/test/classestest/systemtest.py

phasecalculator/test/classestest/temperaturetest.py

phasecalculator/test/iotest/systemcollectionprocessortest.py