Merge pull request baidu#380 from May2016/galaxy3

add generate format json

Merge pull request baidu#318 from haolifei/oringin-master

galaxy agent 持久化pod信息时采用同步方式

Merge pull request baidu#306 from taotaowill/master

bug fix: check chroot switch on deploy and terminate process

Merge pull request baidu#304 from imotai/master

add write_bytes_ps limit

Merge pull request baidu#294 from imotai/master

add io dump tool

Merge pull request baidu#295 from ontologyzsy/master

adapt to multi-netcards

Merge pull request baidu#298 from May2016/master

fix build.sh and change 'tatistics->memory_rss_in_bytes' from '= val'…

Merge pull request baidu#272 from imotai/master

已经上线验证，支持多个数据中心trace展示

Update galaxy_design.md