[Integ] Check export task is happening before every pcluster export-log

[himani2411]

Description of changes

• Check export task is happening before every pcluster export-log command

Below Test is ongoing

test-suites:
  cli_commands:
    test_cli_commands.py::test_slurm_cli_commands:
      dimensions:
        - regions: ["ap-northeast-2"]
          instances: {{ common.INSTANCES_DEFAULT_X86 }}
          oss: ["alinux2023", "ubuntu2404"]
          schedulers: ["slurm"]

References

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