[tex-live] install texlive failed with signature verification

[张俊伟]

Automated TeX Live installation using profile: installation.profile
Loading http://mirrors.huaweicloud.com/repository/toolkit/CTAN/systems/texlive/tlnet/tlpkg/texlive.tlpdb
./install-tl: signature verification error of /tmp/Zn7sPxxNOM/AXi3IGg9rv from http://mirrors.huaweicloud.com/repository/toolkit/CTAN/systems/texlive/tlnet/tlpkg/texlive.tlpdb: cryptographic signature verification of
  /tmp/Zn7sPxxNOM/dhpOXSq4rF
against
  http://mirrors.huaweicloud.com/repository/toolkit/CTAN/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512.asc
failed. Output was
gpg: Signature made Sun Sep 23 20:24:27 2018 EDT
gpg:                using RSA key 4CE1877E19438C70
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