All valid hosts added to cache

[guicassolato]

Ensures all valid hosts are added to the cache despite presence of invalid (taken) ones among them.

Closes #323

Verification steps

make local-setup # clusterWide: true

kubectl create namespace user-1
kubectl -n user-1 apply -f -<<EOF
apiVersion: authorino.kuadrant.io/v1beta1
kind: AuthConfig
metadata:
  name: auth-1
  namespace: user-1
spec:
  hosts:
  - talker-api.127.0.0.1.nip.io
  response:
  - name: x-auth-data
    json:
      properties:
      - name: authconfig
        value: auth-1
EOF

kubectl create namespace user-2
kubectl -n user-2 apply -f -<<EOF
apiVersion: authorino.kuadrant.io/v1beta1
kind: AuthConfig
metadata:
  name: auth-2
  namespace: user-2
spec:
  hosts:
  - talker-api.127.0.0.1.nip.io
  - talker-api.io
  response:
  - name: x-auth-data
    json:
      properties:
      - name: authconfig
        value: auth-2
EOF

kubectl port-forward deployment/envoy 8000:8000 &

curl -H 'Host: talker-api.127.0.0.1.nip.io' http://localhost:8000 -i
# x-auth-data.authconfig: auth-1

curl -H 'Host: talker-api.io' http://localhost:8000 -i
# x-auth-data.authconfig: auth-2

[didierofrivia]

👍🏼