Description of problem:
Assign/Detach Networks dialog shows incorrect flags on networks when network is attached/detached to cluster. 

Problems 

a) when network is detached from cluster no flags are shown (see screenshot 2)
b) when you try to reattach network which was marked as required before to cluster, required flag is missing, VM flag is not shown (see screenshot 3)


Version-Release number of selected component (if applicable):
oVirt Enterprise Virtualization Engine Manager Version: 3.1.0_0001-11.el6ev 

How reproducible:
100%

Steps to Reproduce:
1) Webadmin -> Clusters -> your cluster -> Logical  Networks -> Add Network
   a) fill in name -> click OK

2) Select new network -> Assign/Detach Networks
   a) uncheck attached on your network -> click OK

3) Click Assign/Detach Networks (all checkboxes empty) -> check Attached on your network (required flag missing, VM flag not shown) -> check Required -> click OK

4) Click Assign/Detach Networks (VM flag is filled again)

 
Actual results:
flags in Assign/Detach networks dialog are NOT shown/filled correctly

Expected results:
flags in Assign/Detach networks dialog are shown/filled correctly

Additional info: