[AMBARI-24217] Blueprint deployment with custom service name

[adoroszlai]

What changes were proposed in this pull request?

Blueprint syntax allows specifying custom service name for components (eg. zk
instead of ZOOKEEPER) using the service_instance property, but deployment
fails.

This fix addresses the backend issues (server and agent) that caused the
failure. Note that the UI still doesn't handle custom service names.

How was this patch tested?

Tested blueprint deployment both with custom name and using default names.
Verified service name via API.

$ curl http://${AMBARI_SERVER}:8080/api/v1/clusters/TEST/servicegroups/HDPCORE/services
{
  "items" : [
    {
      "ServiceInfo" : {
        "cluster_name" : "TEST",
        "service_group_name" : "HDPCORE",
        "service_name" : "zokeppar"
      }
    }
  ]
}

$ curl http://${AMBARI_SERVER}:8080/api/v1/clusters/TEST/servicegroups/HDPCORE/services/zokeppar/components
{
  "items" : [
    {
      "ServiceComponentInfo" : {
        "cluster_name" : "TEST",
        "component_name" : "ZOOKEEPER_SERVER",
        "service_group_name" : "HDPCORE",
        "service_name" : "zokeppar"
      }
    }
  ]
}

[asfgit]

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[rnettleton]

This patch looks fine to me, just a minor question/comment.

Could you also please ask @mpapirkovskyy (for the STOMP-related changes) to review this change?

[rnettleton]

Should we consider changing the name of this method as well, to make it clear that service types are now being returned from this method, rather than service names?

[adoroszlai]

Good point, renamed to getServiceTypes.

[adoroszlai]

Hi @scottduan, can you please review the change to execution_command? Thanks.

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