Create a separate billing event when EAP is applied

When EAP is involed we current have one billing event for domain create that
has the create fee and EAP fee lumped together. Change it to record two
separate billing events for each.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=132335349

javatests/google/registry/testing/DatastoreHelper.java

@@ -608,6 +608,13 @@ public class DatastoreHelper {
             FluentIterable.from(asList(expected)).transform(BILLING_EVENT_ID_STRIPPER));
   }
 
+  /** Assert that the expected billing events set is exactly the one found in the fake datastore. */
+  public static void assertBillingEvents(ImmutableSet<BillingEvent> expected) throws Exception {
+    assertThat(FluentIterable.from(getBillingEvents()).transform(BILLING_EVENT_ID_STRIPPER))
+        .containsExactlyElementsIn(
+            FluentIterable.from(expected.asList()).transform(BILLING_EVENT_ID_STRIPPER));
+  }
+
   /**
    * Assert that the expected billing events are exactly the ones found for the given EppResource.
    */