Reset UAT DB

[colinbruce]

Sometimes databases get into inconsistent states
This requires logging in and running

rake db:migrate
rake db:seed

before the instance can be used.
Using @colinbruce's bash scripts it's possible to ID the web pod and run

kubectl -n uat-namespace exec pod-name -- rake db:migrate; rake db:seed

this could be done from a slack bot command and allow non-tech staff to reset the DB on demand without waiting for a dev to be available