Update default CNI to OVNKubernetes

[pravin-dsilva]

With OCP 4.12, the default network type is OVNKubernetes
Reference: openshift/installer#6014

Signed-off-by: Pravin D'silva pravin.dsilva@ibm.com

[mkumatag]

/lgtm

We need to set this default option only for the 4.12+ versions, any idea how do we handle that ?

[Prajyot-Parab]

/approve

[Rajalakshmi-Girish]

@pravin-dsilva: PR is not mergeable.

The PR state is: BLOCKED

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[yussufsh]

/approve

We are going to share variable file for each version and ask user to use a particular file while installing a required OCP version. The default variables will only support latest stable release.
Eg:

• ocp-4.9.tfvars
• ocp-4.10.tfvars

The docs need to change to show how to run the terraform command, terraform apply -var-file var.tfvars -var-file ocp-4.9.tfvars.

[yussufsh]

/lgtm

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This pull-request has been approved by: Prajyot-Parab, pravin-dsilva, yussufsh

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