[JENKINS-69868] Avoid deserialization of anonymous classes

[chriskloe]

Avoid deserialization of anonymous classes. Found a hint in the console log and followed the advice: https://www.jenkins.io/doc/developer/extensibility/serialization-of-anonymous-classes/

Affected issue: JENKINS-69868

[gounthar]

Looks good to me.
Thanks.

[gounthar]

The failure is due to a network or machine connection problem, not to the code itself.

[MarkEWaite]

Thanks for the contribution @chriskloe . Apologies that it took so long to merge.

[chriskloe]

No need to apologize, there has not been a release for some time. Even my first fix is not released yet. On my server I'm working with a locally built version. Maybe enabling incremental builds will help here.
At the moment it looks like I am creating a lot confusion with my commits. I am not yet used to git, github and the git plugin in eclipse.
Today's commits were not intended to go to this PR but instead to individual new ones.
I'm very sorry for that!

[MarkEWaite]

@chriskloe the CVS plugin could really use a new maintainer. Are you still using the plugin? If so, are you interested in adopting the plugin?

Active users of a plugin are often the best maintainers, since they are most likely to release new versions as needed and are most likely to merge pull requests and verify them.