plugin modernization to reduce hpi size

[mawinter69]

• use 2.401.3 as minimum Jenkins version
• replace dependencies to jackson, gson and commons-lang3 with the corresponding api plugins
• remove dependency to groovy. It is not needed and only blows up the hpi.
• remove dependencies to annotation-indexer and structs as they are not required

The size of the hpi is reduced from over 9MiB to 342KiB

Testing done

Don't have access to bitbucket but the tests are running fine

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[cdelmonte-zg]

Hi @mawinter69
Thanks for your PR. Could you just change two things?

The minimum Jenkins version shouldn't be changed at the moment, so that installations running on older versions of Jenkins can still use the updated versions of the plugin. You can look at the distribution of installations in this matrix: https://old.stats.jenkins.io/pluginversions/bitbucket-push-and-pull-request.html

Instead of the @SuppressFBWarnings(value="PA_PUBLIC_PRIMITIVE_ATTRIBUTE", justification="Preserve API compatibility") annotation, could you use the method shown in the official documentation? https://spotbugs.readthedocs.io/en/latest/maven.html#add-spotbugs-maven-plugin-to-your-pom-xml. For example:

• Create a findbugs-exclude.xml file in the project root and specify the pattern for the warnings to be excluded:

<FindBugsFilter
    <Match>
        <Bug pattern="PA_PUBLIC_PRIMITIVE_ATTRIBUTE" />
    </Match>
</FindBugsFilter>

• Then reference this file in the pom.xml SpotBugs plugin configuration:

<plugin
    <groupId>com.github.spotbugs</groupId>
    <artifactId>spotbugs-maven-plugin</artifactId>
    <version>any version</version>
    <configuration>
        <excludeFilterFile>findbugs-exclude.xml</excludeFilterFile>
    </configuration>
</plugin>

[mawinter69]

The gson-api plugin is only available from 2.401.3 so I used that as the baseline. Given that most users that are on a Jenkins older than 2.401.3 are using this plugin also with an older release I think that the impact is not really big to increase the minimum required Jenkins version.
I put the spotbugs exclude file to the location where it is automatically found, that avoids to explicitly define it in the pom.xml

[cdelmonte-zg]

@mawinter69 Merged and released, thanks!