Use the unified composite type package from ai3/go-common

Avoid implementing our own version of asp/userenckey/u2f serialization
and deserialization.
4 jobs for master in 4 minutes and 22 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build Pkgsrc
passed #6979
build_pkgsrc:stretch

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  Build Pkg
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amd64
build_pkg:stretch:amd64

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passed #6981
arm64
build_pkg:stretch:arm64

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  Upload Pkg
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upload_pkg

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