To Reproduce Steps to reproduce the behavior:

1. deploy OCP with network config using mtu of e.g. 1400
2. run an ospdo 17.1 deployment 

Currently we default the pod interface of the controller VMS in the nic template to mtu 1450. If, depending of the cluster configuration, the pod networks does have a lower mtu of e.g. 1400, the deployment will fail on nic config task with:

ERROR os_net_config.main ***Failed to configure with ifcfg provider***",
"nic1 Desired MTU 1450 is greater than supported 1400",

Expected behavior

• deployment not to fail

Known workaround

• could override the default nic template for the controller VM to not have an mtu on the pod network.