[#58099818] config server urls are now configurable

- added new attribute node.mongodb.configserver_url so you can
use a specific URL instead of the standard node.fqdn for registering
config servers
- version bump
[#58099818] feedback: clarify doc, don't change shard node addresses
Merge pull request #2 from Kabam/configservers-with-dns

[#58099818] config server urls are now configurable