Created attachment 1162674 [details]
engine log

Description of problem:
Can't assign static ip for a network that is attached to the same interface as the management network. 

When trying to assign a static ip for a network that is assignet to the same interface as the management network - 'ovirtmgmt', failing with the next error: 

Error while executing action: 

pink-vds2.qa.lab.tlv.redhat.com:
Cannot setup Networks. The address of the network 'iperf-net' cannot be modified without reinstalling the host, since this address was used to create the host's certification.

2016-05-30 09:09:51,686 WARN  [org.ovirt.engine.core.bll.network.host.HostSetupNetworksCommand] (default task-1) [4a892aa4] Validation of action 'HostSetupNetworks' failed for user admin@internal-authz. Reasons: VAR__ACTION__SETUP,VAR__TYPE__NETWORKS,ACTION_TYPE_FAILED_NETWORK_ADDRESS_CANNOT_BE_CHANGED,$ACTION_TYPE_FAILED_NETWORK_ADDRESS_CANNOT_BE_CHANGED_LIST iperf-net
2016-05-30 09:09:51,686 INFO  [org.ovirt.engine.core.bll.network.host.HostSetupNetworksCommand] (default task-1) [4a892aa4] Lock freed to object 'EngineLock:{exclusiveLocks='[2f2023f3-91b7-4c47-886e-669e87d30bb8=<HOST_NETWORK, ACTION_TYPE_FAILED_SETUP_NETWORKS_IN_PROGRESS>]', sharedLocks='null'}'


Version-Release number of selected component (if applicable):
4.1.0-0.0.master.20160529171307.git359707b.el7.centos.noarch


How reproducible:
100

Steps to Reproduce:
1. Add host to ovirt engine 4.0
2. Attach vlan network to the same interface to which the management network attached to via the setrup networks 
3. Set static ip over the vlan network and try to approve operation

Actual results:
Failed with error - 
Cannot setup Networks. The address of the network 'iperf-net' cannot be modified without reinstalling the host, since this address was used to create the host's certification.

Expected results:
Should work as expected as we not trying to change the address of the management network. 

Additional info:
Discovered during the testing of BZ -1255474