User Data registration via UI doesn't honour the domain field

##### ISSUE TYPE

* Bug Report

##### COMPONENT NAME

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User Data
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##### CLOUDSTACK VERSION

4.19 (would be present from 4.18 - when managed user data service support was added)
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##### CONFIGURATION

##### OS / ENVIRONMENT

##### SUMMARY

Registration of user data in a specific domain i.e., by passing the domain in the UI , doesn't honour the domain id passed, rather creates the user data in the domain you are currently logged in to.

##### STEPS TO REPRODUCE

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1. Log in as Admin
2. Create a domain - domain1 under ROOT domain
3. As Admin in the ROOT domain context, register a user data and pass domain as /domain1
4. User data is registered but the domain appears as ROOT and not /domain1
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##### EXPECTED RESULTS

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User data be registered in the correct domain
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##### ACTUAL RESULTS

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User data created / registered in the domain in the current context
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Comece reproduzindo o fluxo de registro de User Data na UI: crie domain1 em ROOT e, em seguida, registre User Data a partir do contexto ROOT passando /domain1. Rastreie o ponto de entrada do registro na UI e o tratamento do campo de domínio. A tarefa estará concluída quando os User Data forem criados em domain1 em vez do domínio ROOT atual.

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