odltools 'netvirt' command options are getting failed due to exception.

With the latest odltools, the following exception is seen while executing the command ‘python -m odltools netvirt show neutron all’

The RestClient is not getting initialized from method ‘get_models(self, args, models)’ in mdsal/models/models.py

All netvirt command options are getting failed for the same reason. 

stack@osc-pike-ubuntu16:~/odltools$ python -m odltools netvirt show neutron all
Traceback (most recent call last):
File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main
 "_main_", fname, loader, pkg_name)
File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
 exec code in run_globals
File "/home/stack/odltools/odltools/_main_.py", line 17, in <module>
 main()
File "/home/stack/odltools/odltools/_main_.py", line 13, in main
 cli.main()
File "odltools/cli.py", line 46, in main
 args.func(args)
File "odltools/netvirt/show.py", line 187, in show_neutron
 config.get_models(args, {"neutron_neutron"})
File "odltools/netvirt/config.py", line 26, in get_models
 gmodels.get_models(args, models)
File "odltools/mdsal/models/models.py", line 119, in get_models
 self.neutron_neutron = neutron.neutron(Model.CONFIG, args)
File "odltools/mdsal/models/neutron.py", line 13, in neutron
 return Neutron(MODULE, store, args)
File "odltools/mdsal/models/model.py", line 38, in _init_
 self.data = get_model_data(self.data, self.filename, self.url, args)
File "odltools/mdsal/models/model.py", line 158, in get_model_data
 data = get_from_odl(url)
File "odltools/mdsal/models/model.py", line 147, in get_from_odl
 return odl_client.get_json(url)
 AttributeError: 'NoneType' object has no attribute 'get_json'