commit 20b7b91edf3f6ae736e8362e2c58eab324f39b8f
author Junjie Hu <junjie.hu@mediatek.com> Fri Jul 10 19:28:31 2015 -0700
committer JP Abgrall <jpa@google.com> Fri Jul 10 19:28:44 2015 -0700
tree 7c95ddaa97c3431c38a357cf09d8187743b0140d
parent 467eda5756e85388e41fbedc34f4d0f2f411d710

Fix CTS android.net package testTrafficStatsForLocalhost seldom fail issue

(cherry-picked from master: 0d4434d998a9fc7c314523503b0a09a8422acc71
  conflict + added Log)

For testTrafficStatsForLocalhost's UID testing, it will also calcuate the wlan0 interface.
There are some TCP re-tranmission in SSLCertificateSocketFactoryTest and it is the same UID as this test case. Need to consider those extra pacetks.
For example,
   Before testTrafficStatsForLocalhost test casae:
   01-08 15:49:11.316  7826  7839 D TrafficStats: parseUidStats, buffer: 14 wlan0 0x0 10067 0 31857 67 4582 55 31857 67 0 0 0 0 4582 55 0 0 0 0
   01-08 15:49:11.335  7826  7839 D TrafficStats: parseUidStats, buffer: 24 lo    0x0 10067 0 40    1    60 1 40 1 0 0 0 0 60 1 0 0 0 0
   After testTrafficStatsForLocalhost test casae:
   01-08 15:49:19.210  7826  7839 D TrafficStats: parseUidStats, buffer: 14 wlan0 0x0 10067 0 31857 67 4738 58 31857 67 0 0 0 0 4738 58 0 0 0 0
   01-08 15:49:19.212  7826  7839 D TrafficStats: parseUidStats, buffer: 24 lo 0x0 10067 0 1155336 2053 1155408 2054 1155336 2053 0 0 0 0 1155408 2054 0 0 0 0
   => There are three extra IP packets after testing due to TCP FIN retreamsisions in previous test case
Suggest to add some extra IP packets for consider the extra traffic in wlan0 interface.
Signed-off-by: Junjie Hu <junjie.hu@mediatek.com>

Change-Id: I981f98fc8647469fb105361516b6a59c53530c70