Flatcar optimize network configuration speed on vmware cloud director

[4ch3los]

Dont wait for network when using flatcar on vmware-cloud-director, as bootstrap script configures network. To achieve this, template support for unit files was added. This reduces bootstrapping time alot, as waiting for network times out currently

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Flatcar Vmware cloud director, bootstrap time improved

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[kron4eg]

is this about rendering the whole provision config and sending it as a userdata so that VM can be provisioned right away without fetching its provisioning instructions?

[4ch3los]

is this about rendering the whole provision config and sending it as a userdata so that VM can be provisioned right away without fetching its provisioning instructions?

Ahh no, the provisioning process doesnt get changed, but for flatcar on vcloud director, the network gets configured by the bootstrap service/script https://github.com/kubermatic/operating-system-manager/blob/main/deploy/osps/default/osp-flatcar.yaml#L192
But the service units is defined to run after the network is available, which wont happen before it runs, so it waits for the timeout and delays the provisioning by about 2 minutes. This pr adds the ability to template the units with go templating, and removes the wait on the bootstrap.unit for flatcar on vcloud :)