Setting the podConfig.nodeSelector value for the velero configuration is not applying the node selector values to the velero deployment.

It looks like we only implemented this for the restic daemonset and not the velero deployment. 

For QE verification, on the DPA spec set:
```
spec:
  configuration:
    velero:
      podConfig:
        nodeSelector:
          foo: bar
```

and verify the velero deployment node selector fields has these values.