Merge pull request #24 from chamankang/master

add compute-metadata-api endpoint
auto_version to 2.0.11
add image-api to balancer config
Merge pull request #25 from cloudware-cookbooks/image_ha

add image-api to balancer config
auto_version to 2.0.12
add process monitoring(sensu check and collectd plugin)
modify haproxy attribute
Merge pull request #26 from itskewpie/master

add process monitoring(sensu check and collectd plugin)
auto_version to 2.0.13
vrid should be the same between vrrp instances