Add framework for a test stage

vars/testStage.groovy

@@ -0,0 +1,14 @@
+#!/usr/bin/env groovy
+
+void call(Map config = [:], Closure body = { }) {
+    Map defaults = [
+        testRequires: 'Makefile',
+        testCmd: 'make all',
+        stepName: 'Test'
+    ]
+    runConfig = defaults + config
+    stage(runConfig.stepName) {
+        printBanner(runConfig.stepName)
+        body()
+    }
+}