The old credential definition labels were not intended to be used as dictionary
keys. Later on, the labels were updated to dictionary keys in seeds.rb;
however a script to upgrade the old labels was never created. This script does
that.
You can reproduce by updating using the new script, and then downgrading using
the same script. For reference, here's what an "old" label set looks like:
conductor=# select label from credential_definitions;
label
-------------------
Username
Password
Username
Password
Username
Password
Access Key
Secret Access Key
Account Number
Key
Certificate
Mainn
