test_bgp: Uncomment out test case for UPDATE
test_bgp: Uncomment out test case for UPDATE

Now BGP packet library supports 32 bits AS number and Extended
Length flag in path attributes, this patch fixes to uncomment
out the test case for UPDATE message.

Signed-off-by: IWASE Yusuke <bb80e84cc9f5a8f01385872ee89032beb5d4eba7@gmail.com>
Signed-off-by: FUJITA Tomonori <93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>

lagopus/ryu-lagopus-ext,fujita/ryu,osrg/ryu,osrg/ryu,shinpeimuraoka/ryu,shinpeimuraoka/ryu,pichuang/ryu,shinpeimuraoka/ryu,shinpeimuraoka/ryu,gareging/SDN_Framework,fujita/ryu,iwaseyusuke/ryu,osrg/ryu,pichuang/ryu,pichuang/ryu,fujita/ryu,osrg/ryu,iwaseyusuke/ryu,lagopus/ryu-lagopus-ext,fujita/ryu,osrg/ryu,iwaseyusuke/ryu,lagopus/ryu-lagopus-ext,shinpeimuraoka/ryu,gareging/SDN_Framework,iwaseyusuke/ryu,iwaseyusuke/ryu,lagopus/ryu-lagopus-ext,fujita/ryu,gareging/SDN_Framework,lagopus/ryu-lagopus-ext,pichuang/ryu,gareging/SDN_Framework,gareging/SDN_Framework,pichuang/ryu