This commit adds the following missing lines/tags to the Ottawa-leep cfg file:

#Possibly include HRV? 
<OPT-VENTisIMS>*mvnt  ../hvac/IMS.vnt
<OPT-VENTisHRV>*mvnt  ../hvac/<Opt-HRVInputFile>

<OPT-WHisIMS>*dhw   ../hvac/<Opt-DHWInputFile>