Add assertions and explicit configuration to junit test

Currently the tests in the build are not executed for the junit
container, the testproject is only compiled because an execution is
missing.

This adds the missing execution and an assertion that ensures the tests
are run.

(cherry picked from commit d3aeec7)

tycho-its/projects/compiler.junitcontainer/junit4-in-bundle-with-dependencies/pom.xml

@@ -32,6 +32,15 @@
 						<version>3.0.0-M5</version>
 					</dependency>
 				</dependencies>
+				<executions>
+					<execution>
+						<id>surefire-test</id>
+						<phase>test</phase>
+						<goals>
+							<goal>test</goal>
+						</goals>
+					</execution>
+				</executions>
 			</plugin>
 		</plugins>
 	</build>

tycho-its/projects/compiler.junitcontainer/junit4-in-bundle/pom.xml

@@ -32,6 +32,15 @@
 						<version>3.0.0-M5</version>
 					</dependency>
 				</dependencies>
+				<executions>
+					<execution>
+						<id>surefire-test</id>
+						<phase>test</phase>
+						<goals>
+							<goal>test</goal>
+						</goals>
+					</execution>
+				</executions>
 			</plugin>
 		</plugins>
 	</build>

tycho-its/src/test/java/org/eclipse/tycho/test/compiler/CompilerClasspathEntryTest.java

@@ -33,13 +33,15 @@ public void testJUnit4Container() throws Exception {
 		Verifier verifier = getVerifier("compiler.junitcontainer/junit4-in-bundle", true);
 		verifier.executeGoal("test");
 		verifier.verifyErrorFreeLog();
+		verifier.verifyTextInLog("Tests run: 5, Failures: 0, Errors: 0, Skipped: 0");
 	}
 
 	@Test
 	public void testJUnit4ContainerWithDependencies() throws Exception {
 		Verifier verifier = getVerifier("compiler.junitcontainer/junit4-in-bundle-with-dependencies", true);
 		verifier.executeGoal("test");
 		verifier.verifyErrorFreeLog();
+		verifier.verifyTextInLog("Tests run: 5, Failures: 0, Errors: 0, Skipped: 0");
 	}
 
 	@Test