Support for empty Limtador CR

[eguzki]

what

• Fix config file of limitador when limits are not set
• Fix support for empty spec.listeners optional field

verification steps

• deploy limitador locally

make local-setup

• deploy empty limitador CR

k apply -f - <<EOF
apiVersion: limitador.kuadrant.io/v1alpha1         
kind: Limitador                                    
metadata:                                          
  name: limitador-sample                           
spec:  {}
EOF

• Limitador operator does not generate any error log

$ k logs -n limitador-operator-system limitador-operator-controller-manager-749c4fdc44-tnsrx -c manager
{"level":"info","ts":1657529026.7756279,"msg":"go version: go1.16.15"}
{"level":"info","ts":1657529026.7756512,"msg":"go os/arch: linux/amd64"}
{"level":"info","ts":1657529026.7756562,"msg":"base logger","log level":"info","log mode":"production"}
{"level":"info","ts":1657529027.3821933,"logger":"controller-runtime.metrics","msg":"metrics server is starting to listen","addr":"127.0.0.1:8080"}
{"level":"info","ts":1657529027.3836012,"msg":"starting manager"}
{"level":"info","ts":1657529027.3845196,"msg":"starting metrics server","path":"/metrics"}
{"level":"info","ts":1657529027.3846383,"msg":"attempting to acquire leader lease limitador-operator-system/3745a16e.kuadrant.io...\n"}
{"level":"info","ts":1657529027.5713243,"msg":"successfully acquired lease limitador-operator-system/3745a16e.kuadrant.io\n"}
{"level":"info","ts":1657529027.572534,"logger":"controller.limitador","msg":"Starting EventSource","reconciler group":"limitador.kuadrant.io","reconciler kind":"Limitador","source":"kind source: /, Kind="}
{"level":"info","ts":1657529027.670073,"logger":"controller.limitador","msg":"Starting Controller","reconciler group":"limitador.kuadrant.io","reconciler kind":"Limitador"}
{"level":"info","ts":1657529027.8804502,"logger":"controller.limitador","msg":"Starting workers","reconciler group":"limitador.kuadrant.io","reconciler kind":"Limitador","worker count":1}
{"level":"info","ts":1657529104.7214217,"logger":"limitador","msg":"create object","limitador":"default/limitador-sample","GKV":"/v1, Kind=Service","name":"limitador-sample","namespace":"default"}
{"level":"info","ts":1657529104.8410294,"logger":"limitador","msg":"create object","limitador":"default/limitador-sample","GKV":"apps/v1, Kind=Deployment","name":"limitador-sample","namespace":"default"}
{"level":"info","ts":1657529105.07508,"logger":"limitador","msg":"create object","limitador":"default/limitador-sample","GKV":"/, Kind=","name":"limits-config-limitador-sample","namespace":"default"}
{"level":"info","ts":1657529105.0891075,"logger":"limitador","msg":"update object","limitador":"default/limitador-sample","GKV":"apps/v1, Kind=Deployment","name":"limitador-sample","namespace":"default"}

• limitador-config.yaml file's content is []

k get cm limits-config-limitador-sample -o yaml
apiVersion: v1
data:
  hash: 58e0494c51d30eb3494f7c9198986bb9
  limitador-config.yaml: |
    []
kind: ConfigMap
metadata:
  creationTimestamp: "2022-07-11T08:45:05Z"
  labels:
    app: limitador
  name: limits-config-limitador-sample
  namespace: default
  resourceVersion: "876"
  uid: 5ef83916-12f4-4da0-82ae-166e12b8aa31

[didierofrivia]

👍🏼

[didierofrivia]

I see, so instead of defining default values in the "code" we'll get them defined in "types"