gen3 db rds aurora migration script

[ajoaugustine]

Jira Ticket: GPE-433

The script defines a Kubernetes Job that automates the process of preparing and migrating Gen3 databases to an RDS Aurora Cluster.

usage: gen3 job run psql-db-aurora-migration

New Features

Add job to migrate gen3 databases from RDS postgresql to RDS Aurora cluster. gen3 job run psql-db-aurora-migration