Being able to change offerings (compute / Network / Disk)

##### ISSUE TYPE

* Feature Idea

##### COMPONENT NAME

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Service Offerings
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##### CLOUDSTACK VERSION

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4.18.1
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##### CONFIGURATION

N/A

##### OS / ENVIRONMENT

N/A

##### SUMMARY

##### STEPS TO REPRODUCE

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Try to edit for example the default egress rules under network offerings or adjust the storage type of the compute offerings from shared to local when using only local storage.
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##### EXPECTED RESULTS

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Being able to change those values so I do not need to create a new offering every time something needs to be adjusted.
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##### ACTUAL RESULTS

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There is no way to adjust anything besides the name, description.
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從 Service Offerings 元件開始，檢查現有的編輯流程，目前該流程只允許變更名稱和描述。定義 compute、network 和 disk offerings 支援的更新，並確認每個要求的值都可以在不建立新 offering 的情況下變更。

由索引模型根據 Issue 內容生成。