Description of problem:
The validator "Validate the Heat environment file for network configuration" fails with error: 

Status: failed

Output:

Task 'Validate the network environment files' failed:
Host: undercloud
Message: MODULE FAILURE

stderr:
    Traceback (most recent call last):
      File "/tmp/ansible_XZN5hZ/ansible_module_network_environment.py", line 27, in <module>
        from os_net_config import validator
    ImportError: No module named os_net_config

Failure! The validation failed for all hosts:
* undercloud

Version-Release number of selected component (if applicable):
openstack-tripleo-validations-9.3.1-0.20181008110747.4064fb7.el7ost.noarch


How reproducible:
100%

Steps to Reproduce:
1. Install OSP14 (from 07-nov-18)
2. Go to tripleo in GUI and run The validator "Validate the Heat environment file for network configuration"
3.

Actual results:
The validator fails with import error in code.

Expected results:
The validator should pass/fail with clear error message for user.

Additional info: