New issuer for letsencrypt staging

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Here is how to get to the Doctored Durian Root CA X3 in PEM format.

Download in DER format:

$ curl http://stg-dst3.i.lencr.org/ > le-staging-root-durian.der

Show detail:

$ openssl x509 -inform der -in le-staging-root-durian.der -text -noout
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            ba:8c:66:24:4d:69:11:78:10:66:52:f6:ea:e5:8f:ed
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: C = US, O = (STAGING) Internet Security Research Group, CN = (STAGING) Doctored Durian Root CA X3
        Validity
            Not Before: Sep 30 21:12:19 2000 GMT
            Not After : Jan 30 14:01:15 2021 GMT
        Subject: C = US, O = (STAGING) Internet Security Research Group, CN = (STAGING) Doctored Durian Root CA X3
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                RSA Public-Key: (2048 bit)
                Modulus:
                    00:a9:46:63:a1:16:e3:81:77:9c:3d:6c:57:90:60:
...

Show as PEM:

$ openssl x509 -inform der -in le-staging-root-durian.der -out le-staging-root-durian.pem

PEM version of this cert:

$ cat le-staging-root-durian.pem 
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
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