feat: rename_deployment.sh, db_transfer.sh scripts

[DerekRoberts]

Originally created for nr-fom postgres migrations.

./rename_deployment.sh <source-deployment-name> [target-deployment-name]

• exports a deployment manifest
• deletes fields (status, some metadata)
• modifies deployment (name, labels)
• redeploys the renamed deployment
• watches rollout to completion/failure
• deletes the old deployment, maintains its pvc

./db_transfer.sh <source-deployment-name> <target-deployment-name>

• verifies that source PVC is older than destination PVC (allows override)
• streams pg_dump to pr_restore between postgres containers
• excludes postgis schemas (tiger, tiger_data, topology)

Steps:

# 1. Scale down stack
# Use web console

# 2. Rename the old db
./rename_deployment.sh fom-test-db

# 3. Deploy the new db
oc process -f openshift.deploy.yml -p ZONE=test -p TAG=test | oc apply -f -

# 4. Stream dump from old to new db
./db_transfer.sh fom-test-db-prev fom-test-db

# 5. Scale up stack
# Use web console

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Thanks for the PR!

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[Copilot]

Pull Request Overview

This PR adds two helper scripts for OpenShift deployment management and updates the README with their usage.

• Introduces rename_deployment.sh to export, rename, and reapply deployments
• Introduces db_transfer.sh to stream a PostgreSQL dump from one deployment to another
• Updates README.md with instructions for the new scripts

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
oc_scripts/rename_deployment.sh	New script to rename an OpenShift deployment manifest
oc_scripts/db_transfer.sh	New script to transfer a Postgres dump between pods
README.md	Added usage documentation for the new scripts

[cberg-aot]

looks good!