[VLAN test] Add VLAN test#375

Merged

lguohan merged 9 commits intosonic-net:masterfrom

tieguoevan:add-vlan-tests

Dec 30, 2017

Commits on Dec 2, 2017

[VLAN test] Add VLAN test
tieguoevan
committed

Commits on Dec 6, 2017

[VLAN test] use new VLAN command instead of cfgmgr
tieguoevan
committed

Commits on Dec 8, 2017

[VLAN test] Add command line how to run test in README.test.md
tieguoevan
committed
[VLAN test] fix VLAN test wrong format in README.test.md
tieguoevan
committed

Commits on Dec 11, 2017

[VLAN test] modify according to the review
tieguoevan
committed

Commits on Dec 12, 2017

[VLAN test] start arp_responder after interface created and stop before
tieguoevan
committed

Commits on Dec 13, 2017

[VLAN test] Fix peer_ip may conflict with VLAN interface IP
tieguoevan
committed

Commits on Dec 30, 2017