If it is possible to avoid hardwiring the license server in the easyconfig, 
I think that would be optimal (eg. how it's doable with the intel compiler),
so that we can share the very exact easyconfig file across most/all easybuild users.
It is also a matter of orthogonality: we expect easyconfigs to be open, we'd rather 
avoid seeing keys in there (if we can do an import, that could also be a solution)