Suppress warnings for spotbugs 4.8.3

jenkinsci/plugin-pom#869 or a subsequent pull
request that updates to 4.8.3 will need this change in the plugin to
resolve new spotbugs warnings that will be reported by spotbugs 4.8.2
and later.

Plugin pom 4.77 is likely to include that new version of spotbugs.

Author: MarkEWaite

src/main/java/org/jenkinsci/plugins/workflow/support/actions/LogStorageAction.java

@@ -24,6 +24,7 @@
 
 package org.jenkinsci.plugins.workflow.support.actions;
 
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import hudson.console.AnnotatedLargeText;
 import hudson.model.TaskListener;
 import java.io.IOException;
@@ -47,6 +48,7 @@
 @Restricted(NoExternalUse.class) // for use from DefaultStepContext only
 public class LogStorageAction extends LogAction implements FlowNodeAction, PersistentAction {
 
+    @SuppressFBWarnings(value="PA_PUBLIC_PRIMITIVE_ATTRIBUTE", justification="Retain API compatibility.")
     public transient FlowNode node;
 
     private LogStorageAction(FlowNode node) {