[ILM] Precheck for frozen nodes

[smnschneider]

Description

Describe the feature:

Create a precheck/error message if there is any frozen node available when you configure a frozen phase for a ILM policy.

Describe a specific use case for the feature:

When you configure an ILM policy you can configure a frozen phase even if there is no frozen node available. This results into errors, when ILM tries to move the respective index to the frozen phase.

{
  "indices": {
    "test-000003": {
      "index": "test-000003",
      "managed": true,
      "policy": "test-policy",
      "index_creation_date_millis": 1661437711978,
      "time_since_index_creation": "2.6d",
      "lifecycle_date_millis": 1661437712549,
      "age": "2.6d",
      "phase": "frozen",
      "phase_time_millis": 1661438011771,
      "action": "searchable_snapshot",
      "action_time_millis": 1661438011771,
      "step": "wait-for-data-tier",
      "step_time_millis": 1661438025183,
      "repository_name": "found-snapshots",
      "snapshot_name": "2022.08.25-test-000003-zrez-dqtikalzsbisdy8tibdl9q",
      "step_info": {
        "message": "no nodes for tiers [data_frozen] available"
      },
      "phase_execution": {
        "policy": "zrez",
        "phase_definition": {
          "min_age": "5s",
          "actions": {
            "searchable_snapshot": {
              "snapshot_repository": "found-snapshots",
              "force_merge_index": true
            }
          }
        },
        "version": 2,
        "modified_date_in_millis": 1661438011894
      }
    }
  }
}

Steps to reproduce:

PUT /_cluster/settings?flat_settings=true
{
  "transient" : {
    "indices.lifecycle.poll_interval" : "10s"
  }
}

PUT _index_template/test-template
{
  "index_patterns": ["test*"],                 
  "template": {
    "settings": {
      "index.lifecycle.name": "test-policy",      
      "index.lifecycle.rollover_alias": "test"    
    }
  }
}

PUT _ilm/policy/test-policy
{
  "policy": {
    "phases": {
      "hot": {
        "min_age": "0ms",
        "actions": {
          "rollover": {
            "max_primary_shard_size": "50gb",
            "max_age": "30d"
          },
          "set_priority": {
            "priority": 100
          }
        }
      },
      "frozen": {
        "min_age": "5s",
        "actions": {
          "searchable_snapshot": {
            "snapshot_repository": "found-snapshots",
            "force_merge_index": true
          }
        }
      }
    }
  }
}

PUT test-000001
{
  "aliases": {
    "test": {
      "is_write_index": true
    }
  }
}

POST test/_rollover
#Wait 10 seconds
GET test-000001/_ilm/explain

[elasticsearchmachine]

Pinging @elastic/es-data-management (Team:Data Management)