UPMC Certificates

UPMC man in the middle's https traffic.

  # as root
  cd /usr/local/share/ca-certificates/
  cert_loc=http://upmccrl.upmc.com/CDP/
  for crt in UPMC-CA23 UPMC-CA20 UPMC-ROOT-CA; do
     wget "$cert_loc/$crt.crt" -O "$crt.crt-der"
     # added 20230707
     openssl x509 -in $crt.crt-der -out $crt.crt -outform PEM
  done
  update-ca-certificates