(FM-1587) Fix test issues on solaris 10

- ensure_packages fails because Error: Sun packages must specify a package source
- ensure_resource fails for the same reason
- get_module_path fails because the modulepath is different
- has_interface_with fails because the interface is lo0 not lo
Merge pull request #276 from hunner/fm_1587

(FM-1587) Fix test issues on solaris 10