It turns out the indexer can only use strings as arguments when
creating a query. Cast `types.CheckID` to a `string` before calling
into `memdb`.
Ideally the indexer would be smart enough to do this at compile-time,
but I need to look into how to do this without reflection and the
runtime package. For the time being statically cast `types.CheckID`
to a `string` at the call sites.
This experiment was brought about because of variable naming
confusion where name and checkIDs were interchanged. Gave CheckID
an Qualified Type Name and chased downstream changes.
This status must be one of the valid check statuses: 'passing', 'warning', 'critical', 'unknown'.
If the status field is not present or the empty string, the default of 'critical' is used.
Enable setting a specific address in a service definition for advertise. If no specific address is given it will fallback to the node address and reassemble the old behaviour.
