Add missing configuration files for test.

test/box_replication/feeder_secondary.cfg

+pid_file = "tarantool.pid"
+
+wal_feeder_bind_ipaddr = "127.0.0.1"
+wal_feeder_bind_port = 33026
+
+wal_feeder_dir = "../"

test/box_replication/tarantool_slave_secondary_feeder_replication.cfg

+pid_file = "tarantool.pid"
+
+primary_port = 33113
+secondary_port = 33114
+admin_port = 33115
+
+namespace[0].enabled = 1
+namespace[0].index[0].type = "HASH"
+namespace[0].index[0].unique = 1
+namespace[0].index[0].key_field[0].fieldno = 0
+namespace[0].index[0].key_field[0].type = "NUM"
+
+remote_hot_standby = 1
+wal_feeder_ipaddr = "127.0.0.1"
+wal_feeder_port = 33026