Summary:
Original PR: D54615
Single zone master full move was failing as the replicationFactor applied has
different logic for multi-az vs single-az universes. Fixed to make it consistent
for full move.

Test Plan: manual verification

Reviewers: anijhawan, anabaria, dshubin

Reviewed By: anabaria

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D54657