Description of problem:

user can create more than 1 network with the same name when checking the external provider check box
Version-Release number of selected component (if applicable):


How reproducible:
in Rhv UI

Steps to Reproduce:
1.Open Network screen
2. Press on 'New' button and add relevant fields, check the check box 'Create on external provider'
3. press on 'ok' button 2 times, or 3 times

Actual results:
user can create more than 1 network with the same name when checking the external provider check box

Expected results:
user can't create more than 1 network with the same name when checking the external provider check box


Additional info:
software version: 4.4.4.7-0.1