CLOUDP-285951: add support for flex clusters to atlas backup restores start

[andreaangiolillo]

Ticket: CLOUDP-285951

This PR updates atas backup restores start to support flex clusters

Flex Cluster

./bin/atlas backup restore start automated \                                                                                           
         --clusterName ClusterFlex \
         --snapshotId 6760158f52708c22437edb7a \
         --targetClusterName ClusterFlex \
         --targetProjectId 663268874ddd3b236fd2f107 -P prod -o json
{
  "deliveryType": "RESTORE",
  "expirationDate": "2024-12-19T17:23:03Z",
  "id": "676402177f4259644976042a",
  "instanceName": "ClusterFlex",
  "projectId": "663268874ddd3b236fd2f107",
  "restoreScheduledDate": "2024-12-19T11:23:03Z",
  "snapshotFinishedDate": "2024-12-16T11:58:50Z",
  "snapshotId": "6760158f52708c22437edb7a",
  "status": "PENDING",
  "targetDeploymentItemName": "ClusterFlex",
  "targetProjectId": "663268874ddd3b236fd2f107"
}

./bin/atlas backup restore start automated \                                                                                          
         --clusterName ClusterFlex \
         --snapshotId 6760158f52708c22437edb7a \
         --targetClusterName ClusterFlex \
         --targetProjectId 663268874ddd3b236fd2f107 -P prod

Restore job '676402726e011b10bca48912' successfully started

Dedicated Cluster

./bin/atlas backup restore start automated \                                                                                             
         --clusterName ClusterDedicated \
         --snapshotId 6762b92b701c1678be0c4ccb \
         --targetClusterName ClusterFlex1 \
         --targetProjectId 663268874ddd3b236fd2f107 -P prod -o json
{
  "cancelled": false,
  "deliveryType": "automated",
  "deliveryUrl": [],
  "desiredTimestamp": {},
  "expired": false,
  "failed": false,
  "id": "676402cb266ae74ba94a8aee",
  "links": [
    {
      "href": "https://cloud.mongodb.com/api/atlas/v2/groups/663268874ddd3b236fd2f107/clusters/ClusterFlex1/backup/restoreJobs/676402cb266ae74ba94a8aee",
      "rel": "self"
    },
    {
      "href": "https://cloud.mongodb.com/api/atlas/v2/groups/663268874ddd3b236fd2f107/clusters/ClusterFlex1/backup/snapshots/6762b92b701c1678be0c4ccb",
      "rel": "https://cloud.mongodb.com/snapshot"
    },
    {
      "href": "https://cloud.mongodb.com/api/atlas/v2/groups/663268874ddd3b236fd2f107/clusters/ClusterFlex1",
      "rel": "https://cloud.mongodb.com/cluster"
    },
    {
      "href": "https://cloud.mongodb.com/api/atlas/v2/groups/663268874ddd3b236fd2f107",
      "rel": "https://cloud.mongodb.com/group"
    }
  ],
  "snapshotId": "6762b92b701c1678be0c4ccb",
  "targetClusterName": "ClusterDedicated",
  "targetGroupId": "663268874ddd3b236fd2f107",
  "timestamp": "2024-12-18T12:02:35Z"
}

[apix-bot]

Coverage Report 📈

Branch	Commit	Coverage
CLOUDP-287238_flex_cluster_feature_branch	64f15eb	38.7%
CLOUDP-285951	7f1e178	38.8%
	Difference	.1%

[blva]

LGTM