Improvement Request : Adjust security groups more flexibly

##### ISSUE TYPE
* Improvement Request

##### COMPONENT NAME
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Security Group
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##### CLOUDSTACK VERSION
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4.19.1.2
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##### CONFIGURATION
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Basic or Advanced networking with Security Group
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##### OS / ENVIRONMENT

##### SUMMARY
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We should be able to add, change or delete security group rules while the instance is running.
Sometimes we need to change the security group for some testing or security protection purposes. However, currently, we are unable to switch to another security group rules while the instance is running. As a result, we have no choice but to affect more instance or stop the instance , change the security group, and then start the instance again.
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##### STEPS TO REPRODUCE

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##### EXPECTED RESULTS

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We should be able to add, change or delete security group rules while the instance is running.
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Comece pelo componente Security Group e analise como Basic e Advanced networking aplicam grupos de segurança a instâncias em execução. Defina o comportamento para adicionar, alterar e excluir regras sem parar ou reiniciar uma instância. Considera-se concluído quando essas operações funcionarem enquanto a instância permanecer em execução nas configurações compatíveis.

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