Tag the Gatling plugin with adopt-this-plugin

[slandelle]

Hello,

We of Gatling no longer maintain this plugin (we have a distinct one for Gatling Enterprise) and would like to mark it for adoption.

Thanks!

[zbynek]

To set a label for a plugin you can just add a topic to the GitHub repository -- it's preferred over using the label file here.
#762 (comment)

[slandelle]

@zbynek I did both as instructed in the official documentation: https://www.jenkins.io/doc/developer/plugin-governance/adopt-a-plugin/#how-can-i-mark-a-plugin-for-adoption:

Add the adopt-this-plugin label to the plugin. It can be done in 2 ways:

• Put an adopt-this-plugin topic in the plugin’s GitHub repository. If you have multiple plugins inside a single repository, it will apply to all of them
• Add an adopt-this-plugin label to the plugin entry in the Update Center’s label-definitions.properties file

[zbynek]

The documentation mentions two ways to do the same thing, there's no benefit in doing both.

The plugin is displayed as "up for adoption" on the plugin site (https://plugins.jenkins.io/gatling/) so I think this PR can be closed.

[slandelle]

@zbynek My point was that you might want to update your documentation if the second way is not recommended and the first one suffices. Anyway, closing as instructed.