Increase replication delay

Author: jeeminso

tests/bwc/test_rolling_upgrade.py

@@ -315,7 +315,7 @@ def _test_rolling_upgrade(self, path, nodes):
                         rc.execute("insert into doc.rx values (1)")
 
                         # account for replication delay, wait_for_active_shards nor REFRESH help here
-                        time.sleep(5)
+                        time.sleep(10)
 
                         rc.execute("select count(*) from doc.x")
                         self.assertEqual(rc.fetchall()[0][0], count + 1)