Support Bulk Operation for Instance Lifecycle

##### ISSUE TYPE

* Feature Idea

##### COMPONENT NAME

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Instance Lifecycle
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##### CLOUDSTACK VERSION

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N/A
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##### CONFIGURATION

##### OS / ENVIRONMENT

##### SUMMARY

As an Admin, if i have a need to use Instance Lifecycle Operations, 95% of the time, it is for a group of VMs with similar natures.

Right now, the implementation of the 'Schedule Lifecycle Operations' feature is done on a per vm basis.

This means, user needs to go to each VM individually, and configure a scheduler. In this case, if i have 100 VMs that needs to have a scheduled restart, id have to manually configure it 100 times, the same settings.

Its because of this, i personally use Ansible + Semaphore with a cron job to achieve this, and not the schedule feature in cloudstack.

As a feature request, i would like to request to enhance VMs in a 'Instance Group' to be allowed to share the same scheduled job. That way, as a user, it would be much more easier to use, manage and troubleshoot.

##### STEPS TO REPRODUCE

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None
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##### EXPECTED RESULTS

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Able to Bulk Operate a VM Schedule job using Instance Groups
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##### ACTUAL RESULTS

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User needs to go to each VM individually, and configure a scheduler
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未指定檔案、測試或進入點。先檢視 CloudStack 現有的 Schedule Lifecycle Operations 和 Instance Group 行為，接著確定應如何表示及管理共用的排程工作；完成的標準是 Instance Group 可以對一個 VM 排程工作執行批次操作。

由索引模型根據 Issue 內容生成。