Extended mysql source (TLS support)

[kastakhov]

Pre-Request Checklist

• [ ] Passes rubocop code analysis (try rubocop --auto-correct)
• [ ] Tests added or adapted (try rake test)
• [x] Changes are reflected in the documentation
• [x] User-visible changes appended to CHANGELOG.md

Description

Extended mysql source configuration to include TLS options

Close the issue #2096

[ytti]

I would make this drier. You are repeating yourself. Instead you could make an hash then add SSL keys to the hash if SSL is defined and then call the constructor with the hash.

[kastakhov]

Sorry, but I don't know ruby (have experience with another languages), so I just made it as I understand this and can say that this solution is working in my environment.

[kastakhov]

I made it a bit clean.

[mortzu]

Please fix the merge conflicts

[kastakhov]

@mortzu have done with it (sorry for the late answer)