[FIXED JENKINS-27086] Use aggregated warnings in analysis collector.

Also refactored the acceptance tests for analysis collector in order to get the warnings plugin integrated. Note that this requires analysis-core 1.71.

src/main/java/hudson/plugins/analysis/collector/handler/WarningsHandler.java

@@ -12,9 +12,9 @@
 import hudson.plugins.analysis.core.PluginDescriptor;
 import hudson.plugins.analysis.core.ResultAction;
 import hudson.plugins.warnings.AggregatedWarningsProjectAction;
+import hudson.plugins.warnings.AggregatedWarningsResultAction;
 import hudson.plugins.warnings.Messages;
 import hudson.plugins.warnings.WarningsDescriptor;
-import hudson.plugins.warnings.WarningsResultAction;
 
 /**
  * Handles access to the warnings plug-in.
@@ -44,6 +44,6 @@ public Class<? extends PluginDescriptor> getDescriptor() {
 
     @Override
     public Collection<? extends Class<? extends ResultAction<? extends BuildResult>>> getResultActions() {
-        return Lists.newArrayList(WarningsResultAction.class);
+        return Lists.newArrayList(AggregatedWarningsResultAction.class);
     }
 }