RHCOS ignore static network config

OCP provide static network configuration when create BMH resource which now we are using,  supposedly  it should keep this network configure from bmh to being a member of cluster node. And we hit an issue when doing cluster expansion on worker nodes using the static network config in the environment with DHCP. The following are details we did.
1. When create bmh CR, it works as expected using the static network config we provide in Live rhcos 
2. Wait until bmh in available state,  start doing scale-out,  the network of this node will change to IP via DHCP server after node reboot during provisioning

the following are some points  we need highlight:
1.Under  /etc/NetworkManager/system-connections/, all the nmconnection files are there and using the configured data we used.  But network manager seems didn't use these file 
2.After exec "nmcli connection up <device>" in coreos, we find it will reload file and start using config we expected. 
3. And then we reboot the node,   network configure will not change and keep the config we provide.

4.12.0

100%

1. Use BMH to config the network for the node which is being add to the cluster
2. The node booted with the rhcos iso, with the static netconfig.
3. The RHCOS is installed to the disk. and reboot.
4. The RHCOS ignores the static network config

The RHCOS ignores the static network config

The RHCOS follow the static network config