Upgrade procedure for PostgreSQL 11 on PG HA installations
We need to be able to upgrade a PG HA installation from PostgreSQL 9.6.X or 10.X to 11.X
The process should be similar to he procedure for upgrading from 9.6.X to 10.X.
Initially, this will be an opt-in upgrade process, but will switch to an automatic upgrade in %12.10.
Edited by Larissa Lane