Drop the scan size during schema 103 upgrade

50,000 is crazy.  Limit to 1000 rows at a time.

Change-Id: I63f93f714faf88bac3d01a81383ef91c3e105bd9
Signed-off-by: Shawn O. Pearce <sop@google.com>
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_103.java b/gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_103.java
index 6861f02..46c3434 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_103.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_103.java
@@ -30,7 +30,7 @@
 import java.util.List;
 
 public class Schema_103 extends SchemaVersion {
-  private static final int MAX_SCAN_SIZE = 50000;
+  private static final int MAX_SCAN_SIZE = 1000;
 
   @Inject
   Schema_103(Provider<Schema_40> prior) {