[yugabyte] Reuse same IP for master and tserver

[the-glu]

Yugabyte new terraform state use a lot of public ips (2 times the node count).

Describe the solution you'd like
In yugabyte terraform states, use the same public IP for master and tserver, since they do use different ports.

Describe alternatives you've considered
None

Additional context
See #1153 for general top level issue.