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

[mflendrich]

Issue originally authored by tnozicka as #2061

Link to the job that flaked.

https://prow.scylla-operator.scylladb.com/view/gs/scylla-operator-prow/pr-logs/pull/scylladb_scylla-operator/2055/pull-scylla-operator-master-e2e-gke-parallel-clusterip/1820487766287323136#1:test-build-log.txt%3A1002

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-e490a80d-2b84-4d9d-a784-d0d9d7c27ee3/backup/schema: many schema files with sm_20240805161410UTC snapshot tag: [cluster/6f019377-acd2-4f23-9aad-d6cb21a05008/task_a7b7283e-c7eb-4830-a975-4fd5d16f19af_tag_sm_20240805161410UTC_schema_with_internals.json.gz cluster/82d8dd25-42fc-4c83-87a9-1e76a0e6a15e/task_d24f0a86-f287-4e04-87f8-46220bddda35_tag_sm_20240805161410UTC_schema_with_internals.json.gz]
  Trace ID: EmDCY15VQlG_ct5tWy6W_A (grep in scylla-manager logs)
  )
  Unexpected error:
      <exec.CodeExitError>: 
      command terminated with exit code 1
      {
          Err: <*errors.errorString | 0xc000c7c180>{
              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:361 @ 08/05/24 16:15:57.416
  Full Stack Trace
    github.com/scylladb/scylla-operator/test/e2e/set/scyllacluster.init.func21.1({{0x0, 0x0}, {0x0, 0x0}, 0x0, 0x0})
    	github.com/scylladb/scylla-operator/test/e2e/set/scyllacluster/scyllamanager_object_storage.go:361 +0x4b47
    reflect.Value.call({0x25ea820?, 0xc000b821e0?, 0x13?}, {0x2d32c3a, 0x4}, {0xc000b2be18, 0x1, 0x1?})
    	reflect/value.go:596 +0xca6
    reflect.Value.Call({0x25ea820?, 0xc000b821e0?, 0x35b0310?}, {0xc000b2be18?, 0x19bcd25?, 0xc00086de90?})
    	reflect/value.go:380 +0xb9 

[rzetelskik]

https://prow.scylla-operator.scylladb.com/view/gs/scylla-operator-prow/pr-logs/pull/scylladb_scylla-operator/2472/pull-scylla-operator-master-e2e-gke-parallel-clusterip/1887474346423750656#1:test-build-log.txt%3A1577

[scylla-operator-bot]

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This bot triages un-triaged issues according to the following rules:

• After 30d of inactivity, lifecycle/stale is applied
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You can:

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/lifecycle stale

[rzetelskik]

/remove-lifecycle stale
/triage accepted

[zimnx]

https://prow.scylla-operator.scylladb.com/view/gs/scylla-operator-prow/pr-logs/pull/scylladb_scylla-operator/2524/pull-scylla-operator-master-e2e-gke-parallel-clusterip/1909881081205624832