Add runner class to Java Lambda sample

Author: mpkorstanje

calculator-java8-junit-jupiter/src/test/java/com/example/calculator/RunCucumberTest.java

@@ -0,0 +1,19 @@
+package com.example.calculator;
+
+import org.junit.platform.suite.api.ConfigurationParametersResource;
+import org.junit.platform.suite.api.IncludeEngines;
+import org.junit.platform.suite.api.SelectPackages;
+import org.junit.platform.suite.api.Suite;
+
+/**
+ * Run Cucumber through the JUnit Platform Suite Engine.
+ * 
+ * <p>Surefire does not use JUnits Test Engine discovery functionality and can
+ * only discover class based tests.
+ */
+@Suite
+@IncludeEngines("cucumber")
+@SelectPackages("com.example.calculator")
+@ConfigurationParametersResource("cucumber.properties")
+class RunCucumberTest {
+}

calculator-java8-junit-jupiter/src/test/resources/cucumber.properties

@@ -0,0 +1,2 @@
+cucumber.plugin=pretty
+cucumber.glue=com.example.calculator