Data Migration Tasks

All dry runs to be:
1. Timestamped at a table level
2. Benchmarked at a table level


Postgres(descending order of creation)
1. countries(unchanged)
2. states(unchanged)
3. categories(unchanged)
4. sub_catgories(unchanged)
5. delayed_api_tasks(unchanged)
6. locations(scripted)
7. location_versions(column changes)
8. location_photos(scripted)

Redis
1. Latest location version

Action Items
1. create tables and db(rahul)
2. migrate unchanged tables(rahul)
3. Script for location, location_photo(vasanth)
4. Column changes for location_version(rahul and vasanth)
5. Set up location prod redis(rahul)
6. Redis script for setting latest version(vasanth) 
7. Figure out what all can be done paralelly(vasanth and rahul)
8. Elastic search document reindex(to handle document format changes)(vasanth and rahul)