Issue2485 fromdp and co2

[dhblum]

This is for #2485. In particular, it:

• Changes damExh.from_dp, damRet.from_dp, damOut.from_dp all = false to revert back to what it used to be on master before MixingBox without exhaust damper #2454.
• Adds unit test for testing solver stall with trace substances and associated reference result
• Updates reference results for package Buildings.Examples.VAVReheat

[mwetter]

@dhblum Please see inline comments for minor changes.

[dhblum]

@mwetter I'm sorry, but I don't understand why now the UTF-8 BOM check fails and how to fix it. EDIT: Also in a previous build, some tests from Buildings.ThermalZones.EnergyPlus failed. The results seemed very close to me, though there were a few points that were a little different in one or two tests, so you may just double check these to see if new reference results are acceptable to you.

[mwetter]

@dhblum : I can update the results in Buildings.ThermalZones.EnergyPlus.
Can the simulation period in Buildings.Examples.VAVReheat.Validation.TraceSubstance be reduced to 2 days rather than 2 weeks? Currently the tests takes about 60 seconds to simulate which is long unless there is a compelling reason for such long a test.

[dhblum]

@mwetter I reduced testing time to 2 days in 025bcad and fixed more subscripts in a5f6faf.