Description of problem
=======================
Given I have an OVN router and it's 'admin_state_up' attribute is 'true',
When I try to update the attribute to 'false'
Then the provider returns 200 [OK] and in the response the attribute value remains 'true'. 

Version-Release number of selected component (if applicable)
============================================================
ovirt-provider-ovn-1.2.22-1.el7ev.noarch

How reproducible
================
100%

Steps to Reproduce:
1. Create a router with the following body:

{
    "router": {
    	"name": "router_1",
        "admin_state_up": true
    }
}
2. Update the 'admin_state_up' to be 'off' with the following body:

{
    "router": {
        "admin_state_up": false
    }
}

Actual results
==============
The provider returns 200 [OK] and the router entity where the property 'admin_state_up': true


Expected results
================
The provider returns 200 [OK] and the router entity where the property 'admin_state_up': false


Additional info
===============
If the router is created with 'admin_state_up': false it CAN be updated to be true, however once it is set to true it CANNOT be updated back to false.