`opennebula_service`: Add "timeouts" block

[sk4zuzu]

Description

1. It seems that timeout for opennebula_service resource is hardcoded to 3 minutes -> https://github.com/OpenNebula/terraform-provider-opennebula/blob/v1.2.2/opennebula/resource_opennebula_service.go#L712, which for something like OneKE appliance is too small and it always fails because of that.
2. Resources like opennebula_image already support "timeouts" block -> https://github.com/OpenNebula/terraform-provider-opennebula/blob/v1.2.2/opennebula/resource_opennebula_image.go#L35-L38.
3. It would be great to have same feature for opennebula_service. :+1: :slightly_smiling_face:

New or affected resources and data sources

• opennebula_service

Potential terraform configuration

resource "opennebula_service" "example" {
  name           = "service"
  template_id    = 11
  extra_template = templatefile("${path.module}/extra_template.json", {})
  timeouts {
    create = "15m"
    delete = "5m"
  }
}

References

https://developer.hashicorp.com/terraform/plugin/sdkv2/resources/retries-and-customizable-timeouts

[treywelsh]

Sorry I didn't see that the issue was assigned so I just made a PR, I'll take this one, I'll take care to assign myself to an issue before working on it in the future

[tinova]

no worries! glad that this is underway :)