Issue copying secret name with more than 63 characters

[sashanka-kandala]

Having issue syncing secret name with more than 63 characters
Docker image used : bourneid/secret-sync-operator
ERROR from secret-sync pod:
"error":"Secret "clustername-xxxxxxxxxxxxxxx-0001" is invalid: metadata.labels: Invalid value: "default.clustername-xxxxxxxxxxxxxxx-0001": must be no more than 63 characters",

[adamj9431]

We ran into this same issue. Our cluster's name is 18 characters, xyz-k8s-production. The operator attempts to create a secret with a label secretsync.ibm.com/replicated-from: default.xyz-k8s-production-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-0000. This fails because the label is longer than 63 characters. We added code to secret_controller.go at line 68 to limit the secret name to 63 characters. This works but there's probably a better way.

const (
	max_length = 63
)
replicated_from := fmt.Sprintf("%s.%s", secret.Namespace, secret.Name)
if len(replicated_from) > max_length {
	replicated_from = replicated_from[:max_length]
}
labels := map[string]string{
	"secretsync.ibm.com/replicated-from": replicated_from,
}