mark replicas as not required

[bacongobbler]

closes #18

[github-actions]

This PR now has an image available for testing:

  ttl.sh/spoopy-operator-pr-:24h

[bacongobbler]

Using @ThorstenHans's steps in #18 (comment), things seem to be working now:

><> k3d cluster create wasm-cluster --image ghcr.io/deislabs/containerd-wasm-shims/examples/k3d:v0.11.0 -p "8081:80@loadbalancer" --agents 2
><> kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.2/cert-manager.yaml
><> make install run

In another terminal:

><> k apply -f config/samples/hpa.yaml
spinapp.core.spinoperator.dev/hpa-spinapp created
horizontalpodautoscaler.autoscaling/spinapp-autoscaler created

@calebschoepp can you confirm?