Issue1897

[miklish]

Issue: #1897

NOTE: This should be merged AFTER pr #1963 has been merged

1. Make Correction to comments in ConsulRegistry.lookupServiceUpdate

consul module; com.networknt.consul.client.ConsulRegistry.lookupServiceUpdate:

• Currently, the comments inside the body of the ConsulRegistry.lookupServiceUpdate method incorrectly state:

"Indicate to updateServiceCache() to leave cache unchanged for now: serviceUrls.isEmpty() == true && serviceUrls.get(serviceName) != null && serviceUrls.get(serviceName).size() == 0"

• This is incorrect. It should state:

"Indicate to updateServiceCache() to leave cache unchanged for now: serviceUrls.isEmpty() == true"

• This update correctly aligns with the lookupServiceUpdate Javadoc comments at the top of the method, specifically where it is stated that:

if: Consul index was stale, or Consul reported no updates since last query then: serviceUrls.size() == 0 (e.g.: Map has no k/v pairs)"

• This also correctly aligns with the behaviour of com.networknt.consul.ConsulRegistry.updateServiceCache()