[gc] cannot delete collection resource "daemonsets"

[lburgazzoli]

On minikube v1.5.2 with camel-k 1.0.0-M5-SNAPSHOT (master), I see the following error:

{
    "level": "error",
    "ts": 1576185575.1529362,
    "logger": "camel-k.traits",
    "msg": "cannot delete child resources: extensions/v1beta1, Kind=DaemonSet",
    "trait": "gc",
    "api-version": "camel.apache.org/v1alpha1",
    "kind": "Integration",
    "ns": "default",
    "name": "sample",
    "error": "daemonsets.extensions is forbidden: User \"system:serviceaccount:default:camel-k-operator\" cannot deletecollection resource \"daemonsets\" in API group \"extensions\" in the namespace \"default\"",
    "stacktrace": "github.com/go-logr/zapr.(*zapLogger).Error\n\tjackfan.us.kg/go-logr/[email protected]/zapr.go:128\njackfan.us.kg/apache/camel-k/pkg/util/log.Logger.Errorf\n\tjackfan.us.kg/apache/camel-k@/pkg/util/log/log.go:61\njackfan.us.kg/apache/camel-k/pkg/trait.(*garbageCollectorTrait).deleteAllOf\n\tjackfan.us.kg/apache/camel-k@/pkg/trait/gc.go:168\njackfan.us.kg/apache/camel-k/pkg/trait.(*garbageCollectorTrait).garbageCollectResources\n\tjackfan.us.kg/apache/camel-k@/pkg/trait/gc.go:144"
}

/cc @astefanutti