v3: acl bug fix removing the "omitempty" tag from the acl DBAASOpensearchAclConfigAcl list

[elkezza]

Description

Removing the omitempty tag from the acl DBAASOpensearchAclConfigAcls list, because it will remove the acl: [] from the payload if the list is empty therefore it will trigger api error if someone tried to delete the last acl user from the list.

with the omitempty the payload with an empty list will look like this:

2024/12/29 14:10:43 Payload Sent to API: {
  "acl-enabled": false,
  "extended-acl-enabled": false
}

which will trigger an error
Bad Request: Invalid value in [3].acls - should be a Collection

Without the omitempty the payload with an empty list will look like this:

2024/12/29 14:10:43 Payload Sent to API: {
  "acl-enabled": false,
  "acls": [],
  "extended-acl-enabled": false
}

Which will not trigger any error.

Checklist

(For exoscale contributors)

• Changelog updated (under Unreleased block)
• For a new resource or new attributes: test added/updated