NSO verify did not handle leaf-list value verification in 4.5 and
later due to changes made for configuration writing made.
map prefix for identityref types in verification.
NSO operations can take much longer than 10 seconds as they operate on
real network equipment, set default timeout to 5 minutes and allow for
user override.
* move set_module_args to units.modules.utils
* unit tests: reuse set_module_args
* unit tests: mock exit/fail_json in module.utils.ModuleTestCase
* unit tests: use module.utils.ModuleTestCase
* unit tests: fix 'import shadowed by loop variable'
