Add Global Setting for Start Instance Default

Add Global Setting for Start Instance Default

##### ISSUE TYPE

* Enhancement Request

##### COMPONENT NAME

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UI
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##### CLOUDSTACK VERSION

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4.19.1.1
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##### CONFIGURATION

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N/A
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##### OS / ENVIRONMENT

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KVM
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##### SUMMARY

We would like to change the default behavior at instance creation for some use cases we have. This Enhancement would add the ability to change that behavior if someone wanted to. A global setting would accomplish this and let the default out of the box still be Start by default.

##### STEPS TO REPRODUCE

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N/A - Workflow Enhancement
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##### EXPECTED RESULTS

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Global Setting that would change the default behavior of Start Instance from `Yes` to `No`. The Global setting would be set to `Yes` by default.
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##### ACTUAL RESULTS

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Default is hard coded to Start Instance at instance creation.
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Comienza localizando la ruta de creación de instancias y las definiciones existentes de las opciones globales; el issue no nombra archivos ni tests específicos. Se considera terminado cuando una opción global tiene Yes como valor predeterminado, permite cambiar el comportamiento predeterminado de Start Instance a No y conserva el comportamiento actual de fábrica cuando no se modifica.

Escrito por el modelo de indexación a partir del texto del issue.