Percona is quite strict on having primary keys on all tables (and rightly so).
Please add primary keys to all tables, even if it's just an auto-increment.

It's mostly just the following tables:
authentication_logs (could just get a auto-increment primary key added)
identity_verification_tokens (could just set the token as primary key)

Description

Some frameworks do not support PKCS #1 OR SEC1 EC formats for the private key and require the use of PKCS #8.
See smallstep/autocert#17 (comment)

We should add the flag --pkcs8 or --format pkcs8 to at least the following commands:

• step ca certificate
• step ca sign
• step ca renew

Autocert should also support thi

Describe the issue:
When testing the RDBMS connection with secondary userstores, the server log prints a redundant error stack trace.

[2020-12-23 14:30:03,384] [b09da314-ec4e-499f-aba4-e956ef9cb9d3] ERROR {org.wso2.carbon.ndatasource.core.DataSourceRepository} - Error establishing data source connection: Login failed for user 'sa'. ClientConnectionId:8879040f-d74b-40ee-bdbd-a30d3e2c983a

Add some warnings in the README about using SHA256 and SHA512, with a list of known apps that do and don't support them.