[Flake] Scylla Manager integration should register cluster, sync backup tasks and support manual restore procedure [It] using default ScyllaDB version [RequiresObjectStorage]

[rzetelskik]

Link to the job that flaked.

https://prow.scylla-operator.scylladb.com/view/gs/scylla-operator-prow/pr-logs/pull/scylladb_scylla-operator/2298/pull-scylla-operator-master-e2e-gke-parallel/1876696345092296704#1:test-build-log.txt%3A1257

/priority important-longterm
/lifecycle frozen

Duplicate of #2061.
Already hit >20 times by our CI.

Snippet of what failed.

  [FAILED] %!(EXTRA string=Error: create restore target, units and views: init target: look for schema file: get schema file from gcs:so-bccbbbac-1323-4340-939b-787eedbf9558/backup/schema: many schema files with sm_20250107185303UTC snapshot tag: [cluster/08419bd7-5f2e-4f97-b5b7-758a6641fddf/task_0ac00c24-016b-475f-b9cd-8361cd0e9ad3_tag_sm_20250107185303UTC_schema_with_internals.json.gz cluster/f847277b-37fc-4312-bf9f-e47030616baa/task_05f5d07f-b560-4b68-86f0-40ac3536e480_tag_sm_20250107185303UTC_schema_with_internals.json.gz]
  Trace ID: LdaN1A3PS0mAXS3ZEFzciw (grep in scylla-manager logs)
  )
  Unexpected error:
      <exec.CodeExitError>: 
      command terminated with exit code 1
      {
          Err: <*errors.errorString | 0xc000a3e1a0>{
              s: "command terminated with exit code 1",
          },
          Code: 1,
      }
  occurred
  In [It] at: github.com/scylladb/scylla-operator/test/e2e/set/scyllacluster/scyllamanager_object_storage.go:372 @ 01/07/25 18:55:36.22

[rzetelskik]

https://prow.scylla-operator.scylladb.com/view/gs/scylla-operator-prow/pr-logs/pull/scylladb_scylla-operator/2297/pull-scylla-operator-master-e2e-gke-parallel-clusterip/1877766313292599296#1:test-build-log.txt%3A1595