* notify: log with context info
* region: guests: log with context info
* region: hosts: log with context info
* region: misc: remove redundant log
* region: skus: use NewInternalServerError instead of NewGeneralError
* appsrv: dispatcher: preserve text id
* appsrv: dispatcher: remove commented-out code
* cloudcommon: db_dispatcher: note errors that won't be translated
* cloudcommon: db: rbac: preserve text id
* cloudcommon: caller: preserve text id
* treewide: fix fmt string
* region: guest_actions: preserve text id
* region: guest_actions: fix fmt string
* region: usages: fix fmt string
* mcclient: hosts: remove redundant return value
* cloudcommon: fetch: preserve text id
* region: guest_template: preserve text id
* cloudcommon: db: db_dispatcher: preserve text id
* region: guest_actions: preserve text id
* httperrors: add funcs for wrap lang tag into context
* vendor: golang.org/x/text
* httperrors: error with context
* httperrors: HTTPError
* treewide: fix typo
* treewide: use en in source code
* locales: initial version
1. 修改了host-deployer 使其支持 vmware vddk 的 deploy guest fs 操作。
2. esxi agent python ==> Go
fix(esxi-agent): Fix some bugs and irregular contents
fix(esxi-agent): Partial parameter structure
fix(esxi-agent): Add ovf template and remove some binary file
fix(esxi-agent): Format Code
fix(esxi-agent): fix based on reviewers' comments
fix(esxi-agent): fix host-deployer because of occasional unknown panic
fix: DelayTask should have a new Context
fix(esxi-agent): call hostutils.DelayTask
change '_interface' package to 'iagent' package
fix(esxi-agent): Fix some irregular code
