Unable to edit sdwan_vpn_interface_cellular_feature_template

[rrahimm]

Templates created by using the resource "sdwan_vpn_interface_cellular_feature_template" cannot be edited from vManage.

To reproduce:

1. Create this resource using TF
2. Go to UI, click Edit and Save. Nothing will happen, in console you will see an error "e.ip is undefined"

This is probably because the provider doesn't include the mandatory, non-configurable block in JSON payload that should look like this

[rrahimm]

@danischm

As Sean is away, can you help to take a look at this when feasible?

[danischm]

Should be fixed here: 726920d