v188-r1

Deploy kubernetes cluster v1.8.8 with calico v2.6.7 using ansible-playbook.
Binaries are downloadable @ https://pan.baidu.com/s/1c4RFaA
For more information, go to README.md
CHANGELOG:

• update components:
  • kubernetes v1.8.8
  • etcd v3.3.1
  • docker 17.12.0-ce
  • calico/node v2.6.7
• others:
  • fix docker container's log file size limits
  • update kubedns to 1.14.8
  • fix haproxy default timeout