PG 12 upgrade - update the runbooks about recovery.conf info to the new format to PG 12

In the new release, recovery.conf is no longer used:

https://www.postgresql.org/docs/release/12.0/

Move recovery.conf settings into postgresql.conf.

We need to review/adapt the configuration that is contained on recovery.conf:

• Restore project ( backups )
• cookbooks/runbooks
• scripts
• WAL replicated replicas ( delayed replica, archived replica , DR)

Acceptance criteria:

• Update all the projects/occurrences to use the new configuration compatible with the replacement of recovery.conf