DatabaseConfigurations#configs_for can accept a symbol in the name param

[andrewn617]

Motivation / Background

This Pull Request has been created because I am changing usages of find_db_config to configs_for in my app. I noticed that while you can pass a symbol to find_db_config you cannot for configs_for, meaning I have to add .to_s at call sites where I might be passing a symbol in. I think it would be nice if configs_for's name parameter worked with a symbol or a string.

Detail

This Pull Request changes the ActiveRecord::DatabaseConfigurations#configs_for method to accept a symbol for the name parameter. The name parameter is used for comparison in one place, so I just call to_s on it there.

Additional information

Checklist

Before submitting the PR make sure the following are checked:

• This Pull Request is related to one change. Changes that are unrelated should be opened in separate PRs.
• Commit message has a detailed description of what changed and why. If this PR fixes a related issue include it in the commit message. Ex: [Fix #issue-number]
• Tests are added or updated if you fix a bug or add a feature.
• CHANGELOG files are updated for the changed libraries if there is a behavior change or additional feature. Minor bug fixes and documentation changes should not be included.

[kmcphillips]

This is great, thanks!