Allow deploy of tests to be user configurable by environment

[paxtonhare]

Currently, if you enable unit tests in roxy the /test dir gets deployed except to the "prod" environment. Since people can rename their environments, we need to make this configurable too. That way when I deploy to "PROD" I can turn off tests. I propose we provide a:

do-not-deploy-tests=prod in default.properties.

this will allow people to override in their build.props.

[dmcassel]

Makes sense to me.