Implement a second sizing run for condenser loops

[mdahlhausen]

Currently, the workflow:

1. constructs the HVAC system with default efficiencies
2. runs a sizing run
3. updates equipment efficiencies based on the sizing run

This works for equipment where their size does not depend on other equipment sizes. That's most but not all equipment.
Condenser looping sizing depends partly on chiller efficiency. The more efficient the chiller, the less heat there is to reject.
This came up in #1422 to change the default chiller efficiency - it slightly increased the size of heat rejection equipment, because the OpenStudio default COP of 5.5 was slightly greater than the new default 3.517/0.66 = 5.328.

The NRCAN section of code handles this by running a second design sizing if plant loops are present.

This issue is to introduce a second sizing run if condenser loops or other similar heat rejection equipment are in the model.