Update a test file to avoid decoding problem in a future update

Port 639 for a RESP packet could make it considered as an MSDP packet.
Avoid port 639.

The RESP packets gave:
6.3.218.255.6379 > 0.1.31.99.639

They give now:
6.3.218.255.6379 > 0.1.31.99.52759

Author: fxlb

tests/babel_update_oobr.out

@@ -6,8 +6,8 @@
 	0x0010:  b1b1 b1b1 b158 5e0a 02f4 0ab1 0402 0f0f  .....X^.........
 	0x0020:  ff80 0f0f 0f0f 0f00 80a1 00b2 b2b2 b20d  ................
 	0x0030:  0d3a 3400 0001 00                        .:4....
-    5  20:26:40.2097152 IP 6.3.218.255.6379 > 0.1.31.99.639: Flags [S.UW], seq 2751463404:2751463426, ack 1006637056, win 45746, urg 25778, length 22: RESP [|resp]
-    6  20:27:12.000000 IP 6.3.208.255.6379 > 0.1.31.99.639: Flags [S.UW], seq 2751463404:2751463426, ack 1006640128, win 45746, urg 25778, length 22: RESP "M-2M-2M-2M-2M-2M-7dM-2M-2M-2M-2M-2" [|resp]
+    5  20:26:40.2097152 IP 6.3.218.255.6379 > 0.1.31.99.52759: Flags [S.UW], seq 2751463404:2751463426, ack 1006637056, win 45746, urg 25778, length 22: RESP [|resp]
+    6  20:27:12.000000 IP 6.3.208.255.6379 > 0.1.31.99.52759: Flags [S.UW], seq 2751463404:2751463426, ack 1006640128, win 45746, urg 25778, length 22: RESP "M-2M-2M-2M-2M-2M-7dM-2M-2M-2M-2M-2" [|resp]
     7  20:27:12.000000 IP 208.21.10.1.654 > 31.99.100.232.80:  aodv rrep 34  prefix 4 hops 11
 	dst 237.34.38.84 dseq 32203525 src 232.11.2.0 67108864 ms
 	ext 0 0