K8s manifests are missing namespace

[LittleFox94]

The manifests for ServiceAccount and Secret do not have a namespace defined, making the install instructions incomplete

Since the ClusterRoleBinding binds to the ServceAccount grafana-kubegraf in Namespace default, this namespace should be set in the ServiceAccount resource, probably the same for the Secret resource

My kubeconfig is set to use the kube-system namespace by default

[sergeisporyshev]

Hi, @LittleFox94
Thanks for your issue
Will add it asap