[deploy] Wait for vEOS to come back after restart#906

Merged

qiluo-msft merged 4 commits intosonic-net:masterfrom

wangxin:wait-for-vm

May 17, 2019

Commits on May 8, 2019

[deploy] Wait for vEOS to come back after restart
Xin Wang
committed

Commits on May 16, 2019

[deploy] Replace handlers with tasks to ensure execution sequence
Xin Wang
committed
[deploy] Replace ping cmd with wait_for module
Xin Wang
committed

Commits on May 17, 2019

[deploy] Remove unused handlers
Xin Wang
committed