Fix components crash before crds creation (#602)

* Wait for CRDs creation for 30 sec when component start
* Fix ensureCRD return nil while the error is not empty

timer/main.go

@@ -17,6 +17,8 @@ limitations under the License.
 package timer
 
 import (
+	"log"
+
 	"github.com/fission/fission/crd"
 	"github.com/fission/fission/publisher"
 )
@@ -27,6 +29,11 @@ func Start(routerUrl string) error {
 		return err
 	}
 
+	err = fissionClient.WaitForCRDs()
+	if err != nil {
+		log.Fatalf("Error waiting for CRDs: %v", err)
+	}
+
 	poster := publisher.MakeWebhookPublisher(routerUrl)
 	MakeTimerSync(fissionClient, MakeTimer(poster))