Dagger, meet Flows. Flows, meet Dagger.

Daggerizes all of the EPP flows. This does not change anything yet
about the flows themselves, just how they are invoked, but after
this CL it's safe to @Inject things into flow classes.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=125382478

java/google/registry/flows/domain/DomainRenewFlow.java

@@ -59,6 +59,8 @@ import org.joda.time.DateTime;
 
 import java.util.Set;
 
+import javax.inject.Inject;
+
 /**
  * An EPP flow that updates a domain resource.
  *
@@ -86,6 +88,8 @@ public class DomainRenewFlow extends OwnedResourceMutateFlow<DomainResource, Ren
   protected FeeRenewExtension feeRenew;
   protected Money renewCost;
 
+  @Inject DomainRenewFlow() {}
+
   @Override
   protected Set<StatusValue> getDisallowedStatuses() {
     return RENEW_DISALLOWED_STATUSES;