support mysql8.0.x

[HappyUncle]

support 8.0.x

[markus456]

This should be done in a more controllable manner so that you can use MySQL connectors with MariaDB. Adding it as a configuration parameter would allow it to be enabled and disabled. Another option might be to see if there's a way to detect that the client doesn't expect the 5.5.5- prefix and drop it only for those clients.

[HappyUncle]

Thank you for your reply. Later I will change it as configuration parameter, so that can control it.

[markus456]

I think I have to apologize: I misunderstood which version_string this change affected. I thought it was for the one returned by the backend servers themselves that MaxScale uses by default but instead it is for the version_string parameter defined in the configuration file.

Now that I've taken a second look at this, I think just the original commit would be adequate as the new parameter doesn't seem to do that much.

[markus456]

Additionally, we require that any code contributions to MaxScale are submitted under the BSD-new license. Please indicate this by leaving a comment with the following text:

I am contributing the new code of the whole pull request, including one or several files that are either new files or modified ones, under the BSD-new license.

[HappyUncle]

I am contributing the new code of the whole pull request, including one or several files that are either new files or modified ones, under the BSD-new license.

[markus456]

I mean that the original commit that only checks whether the version_string starts with an 8 would have been enough. Can you use that commit?

[HappyUncle]

Ok, I've revised it.