* use utf8mb4 character set for connections to mysql
* use utf8mb4 character set for tables, shorten varchar fields used in unique indexes
* migration type to update table character set
* update table character sets
* set charset for temp_user.status
* gofmt
Use a SecureJsonData field for TLS
Client Auth instead of 3 new db
fields. Same model as used for
PluginSettings.
Saves and encrypts the pem file
content rather than just saving
the paths to the cert and key.
This allows for uploading from
the Edit Datasource page in
Grafana.
