commit 7e5dc6847144b11a86523ec4727080f1eb088da0
author Bindu Mahadev <bmahadev@google.com> Fri Feb 01 16:53:34 2019 -0800
committer Bindu Mahadev <bmahadev@google.com> Tue Feb 05 11:20:40 2019 -0800
tree 8da65fc3f98e46e7a36861a9651642f4b51ff9f9
parent b48dd267302713b0c86283ab0cc3d23e8223e797

[Utils]Negative testcase for Roaming.

Added a method in utils to configure any AP with one desired network with custom ssid, passwd.
Added a roaming negative testcase:
 Steps:
1. Configure AP1 with a wpa2 network(ssid, passwd)
2. Configure Ap2 with the same network, but incorrect passwd
3. Connect to AP1 and trigger roaming to AP2, by adjusting attenuation
4. Roaming to AP2 will fail
5. Re-configure AP2 with the correct passwd
6. Verify that roaming is successful.

Bug: 116156756
Test: Local

Change-Id: Ief97bdd02fb3189be853f1b02304e6b633315a37