[Improvement] kbcli install addon must specify VERSION options

[shanshanying]

			// if the version not specified, use the latest version
			if o.version == "" {
				o.addon = item.addon
				o.version = getAddonVersion(item.addon)
				break

version is optinal. If not specified, the latest version will be installed while the latest is not guaranteed to work on current KB. we should always ask the user to specify the versions to reduce the risk.