Description of problem:
When host have network attach to it ('net_1') and we move the host to another cluster that also have network 'net_1' the network become un-managed network in setupnetwork dialog but show as un-synced in the networks tab under the host

Version-Release number of selected component (if applicable):
rhevm-3.6.0-0.11.master.el6.noarch



Steps to Reproduce:
1. Create two DCs (dc1 and dc2)
2. Add to dc1 a host
3. Create net_1 on both DCs
4. Attach net_1 to host
5. Move the host from dc1 to dc1 

Actual results:
net_1 is un-managed

Expected results:
net_1 should be un-synced