Remove the WaitCacheSync block on informers

The WaitForCacheSync waits forever and never returns in the case a
persisten error occurs. On the other hand, it looks like there is no
way in the current version of surfacing informer problems to the caller,
as stated in this issue: kubernetes/client-go#155.
Error handling for informers has been added recently in
kubernetes/kubernetes#87329 which is only available
in master for the moment.

pkg/events/configmap.go

@@ -16,7 +16,6 @@ package events
 
 import (
 	"context"
-	"fmt"
 
 	"github.com/3scale/marin3r/pkg/reconciler"
 	"github.com/3scale/marin3r/pkg/util"
@@ -72,9 +71,6 @@ func (cmh *ConfigMapHandler) RunConfigMapHandler() error {
 	})
 	stopper := make(chan struct{})
 	go informer.Run(stopper)
-	if !cache.WaitForCacheSync(stopper, informer.HasSynced) {
-		return fmt.Errorf("Timed out waiting for caches to sync")
-	}
 
 	cmh.logger.Info("ConfigMap handler started")
 

pkg/events/secret.go

@@ -16,7 +16,6 @@ package events
 
 import (
 	"context"
-	"fmt"
 
 	"github.com/3scale/marin3r/pkg/reconciler"
 	"github.com/3scale/marin3r/pkg/util"
@@ -75,9 +74,6 @@ func (sr *SecretHandler) RunSecretHandler() error {
 	})
 	stopper := make(chan struct{})
 	go informer.Run(stopper)
-	if !cache.WaitForCacheSync(stopper, informer.HasSynced) {
-		return fmt.Errorf("Timed out waiting for caches to sync")
-	}
 
 	sr.logger.Info("Secret handler started")
 	<-sr.ctx.Done()