Replace ExceptionRule with ExpectedException

This is in preparation for running the automatic refactoring script that
will replace all ExpectedExceptions with use of JUnit 4.13's assertThrows/
expectThrows.

Note that I have recorded the callsites of assertions about EppExceptions
being marshallable and will edit those specific assertions back in after
running the automatic refactoring script (which do not understand these).

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=178812403

javatests/google/registry/reporting/IcannReportingModuleTest.java

@@ -20,7 +20,6 @@ import static org.mockito.Mockito.when;
 
 import google.registry.reporting.IcannReportingModule.ReportType;
 import google.registry.request.HttpException.BadRequestException;
-import google.registry.testing.ExceptionRule;
 import google.registry.testing.FakeClock;
 import google.registry.util.Clock;
 import java.util.Optional;
@@ -30,6 +29,7 @@ import org.joda.time.YearMonth;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.ExpectedException;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
@@ -40,7 +40,7 @@ public class IcannReportingModuleTest {
   HttpServletRequest req = mock(HttpServletRequest.class);
   Clock clock;
 
-  @Rule public final ExceptionRule thrown = new ExceptionRule();
+  @Rule public final ExpectedException thrown = ExpectedException.none();
 
   @Before
   public void setUp() {