Description of problem:
updating a NIC's "Device identifier" if it doesn't already have one fails if the "Device identifier" includes a . or :

Version-Release number of selected component (if applicable):
nightly

How reproducible:
100%

Steps to Reproduce:
1. Create a new ( dont set Device identifier on the NIC)
2. edit host and try to set Device identifier to eth1:210 for example
3.

Actual results:
Error: Can't add or remove : from identifier

Expected results:
to be able to set it.

Additional info