Resolves mojohaus#1009: Fixing a broken test scenario

versions-maven-plugin/src/it/it-display-plugin-updates-006/invoker.properties

@@ -1 +1,2 @@
-invoker.goals=versions:display-plugin-updates
+invoker.goals = ${project.groupId}:${project.artifactId}:${project.version}:display-plugin-updates
+invoker.mavenOpts = -Dversions.outputFile=./output.txt -DoutputEncoding=UTF-8

versions-maven-plugin/src/it/it-display-plugin-updates-006/verify.groovy

@@ -0,0 +1,13 @@
+// because no minimum Maven version is not specified for the project, multiple
+// possible updates for maven-deploy-plugin should be listed
+//
+// previously, the minimum Maven version for versions-maven-plugin was assumed due to #996
+// which caused the plugin to only output the updates for the minimum version for versions-maven-plugin
+
+def output = new File(basedir, "output.txt").text
+assert output.contains('All plugins with a version specified are using the latest versions.')
+assert output =~ /\Qmaven-deploy-plugin\E\s*\.*\s*\Q2.3 -> 2.4\E/
+assert output =~ /\Qmaven-deploy-plugin\E\s*\.*\s*\Q2.3 -> 2.8.1\E/
+assert output =~ /\Qmaven-deploy-plugin\E\s*\.*\s*\Q2.3 -> 2.8.2\E/
+assert output =~ /\Qmaven-deploy-plugin\E\s*\.*\s*\Q2.3 -> 3.0.0-M2\E/
+assert output =~ /\Qmaven-deploy-plugin\E\s*\.*\s*\Q2.3 -> 3.1.1\E/