Priority attribute ignored with Citrus base class

**Citrus Version**
2.7.4

**Expected behavior**
Using the folowwing code should run the tests in the order
test7
test5
test5

```
public class SimpleTest extends TestNGCitrusTestRunner {
@Test(priority = 0)
public void test7() {
System.out.println("7");
}
@Test(priority = 2)
public void test5() {
System.out.println("5");
}
@Test(priority = 1)
public void test4() {
System.out.println("4");
}
}
```

**Actual behavior**
The priority field is ignored

**Test case sample**
Using the Spring base class or none. The priority is used. But using the citrus one. It doesn't worked

```
@ContextConfiguration(locations = { "classpath:spring-test-config.xml" })
public class SimpleTest extends AbstractTestNGSpringContextTests {

@Test(priority = 0)
public void test7() {
System.out.println("7");
}

@Test(priority = 2)
public void test5() {
System.out.println("5");
}

@Test(priority = 1)
public void test4() {
System.out.println("4");
}
}

```