* add acs-engine mirror sites
* fix deploy docker registry command sample
* short arm template resource name
* change arm template resource name prefix to resource group id
* rollback arm template resoure prefix to resource group name except storage accounts
* change arm template resource name prefix to resource group id unique string
* fix private registry invalid secret issue
* add acs-engine mirror sites
* fix deploy docker registry command sample
* short arm template resource name
* change arm template resource name prefix to resource group id
* rollback arm template resoure prefix to resource group name except storage accounts
* change arm template resource name prefix to resource group id unique string
* add acs-engine mirror sites
* fix deploy docker registry command sample
* short arm template resource name
* change arm template resource name prefix to resource group id
* rollback arm template resoure prefix to resource group name except storage accounts
* add acs-engine mirror sites
* fix deploy docker registry command sample
* short arm template resource name
* change arm template resource name prefix to resource group id