add example CRL PEM files to vectors

[etrauschke]

These are the CRL files I need to cover the backend code for the CRL interface. I put short descriptions in the test-vectors.rst but pasted the detailed layout below:

crl_all_reasons.pem:

Certificate Revocation List (CRL):
        Version 3 (0x2)
    Signature Algorithm: sha256WithRSAEncryption
        Issuer: /C=US/CN=cryptography.io
        Last Update: Jan  1 00:00:00 2015 GMT
        Next Update: Jan  1 00:00:00 2016 GMT
Revoked Certificates:
    Serial Number: 00
        Revocation Date: Jan  1 00:00:00 2015 GMT
    Serial Number: 01
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                Unspecified
    Serial Number: 02
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                Key Compromise
    Serial Number: 03
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                CA Compromise
    Serial Number: 04
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                Affiliation Changed
    Serial Number: 05
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                Superseded
    Serial Number: 06
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                Cessation Of Operation
    Serial Number: 07
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                Certificate Hold
    Serial Number: 08
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                Remove From CRL
    Serial Number: 09
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                Privilege Withdrawn
    Serial Number: 0A
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            Invalidity Date: 
                Jan  1 00:00:00 2015 GMT
            X509v3 Certificate Issuer: critical
                DirName:/C=US/CN=cryptography.io
            X509v3 CRL Reason Code: 
                AA Compromise
    Serial Number: 0B
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            X509v3 CRL Reason Code: 
                Key Compromise
            1.2.3.4: 

    Signature Algorithm: sha256WithRSAEncryption

crl_dup_entry_ext.pem:

Certificate Revocation List (CRL):
        Version 3 (0x2)
    Signature Algorithm: sha256WithRSAEncryption
        Issuer: /C=US/CN=cryptography.io
        Last Update: Jan  1 00:00:00 2015 GMT
        Next Update: Jan  1 00:00:00 2016 GMT
Revoked Certificates:
    Serial Number: 00
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            X509v3 CRL Reason Code: 
                Key Compromise
            X509v3 CRL Reason Code: 
                Key Compromise
    Signature Algorithm: sha256WithRSAEncryption

crl_md2_unknown_crit_entry_ext.pem:

Certificate Revocation List (CRL):
        Version 3 (0x2)
    Signature Algorithm: md2WithRSAEncryption
        Issuer: /C=US/CN=cryptography.io
        Last Update: Jan  1 00:00:00 2015 GMT
        Next Update: Jan  1 00:00:00 2016 GMT
Revoked Certificates:
    Serial Number: 00
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            1.2.3.4: critical

    Signature Algorithm: md2WithRSAEncryption

crl_unsupported_reason.pem:

Certificate Revocation List (CRL):
        Version 3 (0x2)
    Signature Algorithm: sha256WithRSAEncryption
        Issuer: /C=US/CN=cryptography.io
        Last Update: Jan  1 00:00:00 2015 GMT
        Next Update: Jan  1 00:00:00 2016 GMT
Revoked Certificates:
    Serial Number: 00
        Revocation Date: Jan  1 00:00:00 2015 GMT
        CRL entry extensions:
            X509v3 CRL Reason Code: 
                12
    Signature Algorithm: sha256WithRSAEncryption

[reaperhulk]

Verified. I'll merge once travis is done!

[coveralls]

Coverage remained the same at 100.0% when pulling 70d3138 on etrauschke:crl_vectors into 13dcdf8 on pyca:master.

[coveralls]

Coverage remained the same at 100.0% when pulling 70d3138 on etrauschke:crl_vectors into 13dcdf8 on pyca:master.