Explicitly declare dependencies (#1192)

Reduce the risk that new dependencies will be injected accidentally from
a dependency update.

The developer documentation provides more details at
https://www.jenkins.io/doc/developer/plugin-development/dependencies-and-class-loading/#build-time-validation-of-bundled-artifacts

Originally added to Maven hpi plugin in pull request:

* jenkinsci/maven-hpi-plugin#771

Testing done

* Confirmed that automated tests pass

Author: MarkEWaite

pom.xml

@@ -37,6 +37,8 @@
     <jenkins.version>${jenkins.baseline}.3</jenkins.version>
     <useBeta>true</useBeta>
     <gitHubRepo>jenkinsci/docker-plugin</gitHubRepo>
+    <hpi.bundledArtifacts>junixsocket-common,junixsocket-native-common</hpi.bundledArtifacts>
+    <hpi.strictBundledArtifacts>true</hpi.strictBundledArtifacts>
     <!-- Our unit-tests that talk to a real docker deamon aren't very stable -->
     <!-- <surefire.rerunFailingTestsCount>3</surefire.rerunFailingTestsCount> -->
     <spotbugs.effort>Max</spotbugs.effort>