Using different interface for br-fw-admin than the boot interface, IP duplication will be present after rebooting the host

[Alexander Zatserklyany]

Using different interface for br-fw-admin than the boot interface, IP duplication will be present after rebooting the host (right after provisioning)
In this case 2 network interfaces are connected to admin network and 1st one used for booting but the other should be used for normal service.

Steps to reproduce
-----------------------------
1. Create environment
    fuel env create --name=test --mode=ha --rel=2
2. Upload network template (see in attachment)
    fuel --env 1 network-template --upload
3. Add node with role 'virt'
    fuel node -s --env 1 --node-id=1 --role=virt
4. Provision the node
    fuel --env 1 node --provision --node 1
5. Execute netconfig task
    fuel node --node 1 --end netconfig
6. Get net configuration
    ssh node-1 ifconfig | grep -A 1 -E 'br-fw-admin|eth0'

Expected results:
--------------------------
br-fw-admin and eth0 has different IPs

Actual results:
---------------------
br-fw-admin Link encap:Ethernet HWaddr 0c:c4:7a:13:4a:91
          inet addr:172.16.58.201 Bcast:172.16.58.255 Mask:255.255.255.192
--
eth0 Link encap:Ethernet HWaddr 0c:c4:7a:13:4a:90
          inet addr:172.16.58.201 Bcast:172.16.58.255 Mask:255.255.255.192

[Anton Matveev (amatveev)]

sla2 tag for MOS7.0

[Stanislav Makar (smakar)]

I have just researched all variants and there is no such possibility to disable and flush ip address you already used to boot in templates due to It is a very rare case but there are some workarounds:

1. Disable the not_needed_int and boot, provision and deploy on that interface which you want to be in admin network
2. You can upload template and then download astute.yaml for every node and add there endpoint with below values and upload them:

for example
network_scheme:
  transformations:
   - action: add-port
    name: not_neede_int
  endpoints:
    not_neede_int:
      IP: none

3. You can assign this not_needed_int to the fake network in template