Updates the details of an existing subscription. Only enter values for parameters you want to change. Empty parameters are not updated.
shield_update_subscription(AutoRenew)When you initally create a subscription, AutoRenew is set to
ENABLED. If ENABLED, the subscription will be automatically renewed
at the end of the existing subscription period. You can change this by
submitting an UpdateSubscription request. If the UpdateSubscription
request does not included a value for AutoRenew, the existing value
for AutoRenew remains unchanged.
svc$update_subscription( AutoRenew = "ENABLED"|"DISABLED" )