Decouple dryRun from SessionMetadata

dryRun is only available via the (sessionless!) tool, and is not
a property of the session.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=125203026

java/google/registry/flows/EppConsoleAction.java

@@ -43,6 +43,7 @@ public class EppConsoleAction implements Runnable {
     eppRequestHandler.executeEpp(
         new HttpSessionMetadata(session),
         new GaeUserCredentials(getUserService().getCurrentUser()),
+        false,  // This endpoint is never a dry run.
         inputXmlBytes);
   }
 }