I need to reserve machine for long time. When I specified 72 hours in Makefile, command `make bkradd` stopped with message that only hours and minutes is valid. I filled hours, so why it stopped with error. There should be other message or it should allow more than 24 hours.

# cat Makefile | grep TestTime
	@echo "TestTime:        72h" >> $(METADATA)

# make bkradd
...
Exception: <Fault 1: "<class 'bkr.server.testinfo.ParserWarning'>:TestTime unit is not valid, should be m (minutes) or h (hours)">
/usr/share/rhts/lib/rhts-make.include:99: recipe for target 'bkradd' failed
make: *** [bkradd] Error 1