Test app : Fix `-repeat` in Python 3
Test app : Fix `-repeat` in Python 3

I haven't got to root cause of this, but loading the tests again for each repeat seems pretty harmless.

boberfly/gaffer,ImageEngine/gaffer,johnhaddon/gaffer,boberfly/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,andrewkaufman/gaffer,hradec/gaffer,lucienfostier/gaffer,andrewkaufman/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,boberfly/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,andrewkaufman/gaffer,hradec/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,GafferHQ/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,GafferHQ/gaffer,hradec/gaffer,johnhaddon/gaffer,hradec/gaffer,hradec/gaffer,johnhaddon/gaffer,boberfly/gaffer,lucienfostier/gaffer