Enhance registering spec image assets for initMultiCloud

[seokho-son]

• 이미지, 스펙 등록 속도 향상
  • 기존: 10분 이상, 개선: 약 6분 이내
• 스크립트 UI 개선 등

  {
    "message": "CreateNs(); The namespace ns01 already exists."
  }
  
  
  Loading common Specs and Images takes more than 10 minutes.
  Load common Specs and Images. Do you want to proceed ? (y/n) : y
  
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[seokho-son]

/approve