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Various LUKS2 OPAL support improvements

Ondrej Kozina requested to merge oniko/cryptsetup:opal-support-improvements into main
  • introduces private dm uuid prefix LUKS2_OPAL so that we can detect active devices configured for OPAL locking range when LUKS2 header is missing
  • enables detached header support even for OPAL enabled devices
  • implements missing crypt_suspend/resume support. It locks OPAL range after successful suspend of top level dm device
  • adds new tests

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