Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/serverauth-ec-ku-digitalsignature/chain.pem

-[Created by: generate-serverauth-ec-ku-digitalsignature.py]
+[Created by: generate-chains.py]
 
 Certificate chain with 1 intermediate, a trusted root, and a target
 certificate for serverAuth that has only digitalSignature.
 
 Certificate:
     Data:
         Version: 3 (0x2)
         Serial Number: 1 (0x1)
     Signature Algorithm: sha256WithRSAEncryption
         Issuer: CN=Intermediate
@@ skipping 215 matching lines @@
          4f:13:b5:44:e1:9c:13:8f:74:cd:4f:46:d2:f1:c1:7f:ed:40:
          b6:7a:da:0a:b1:d7:02:e5:11:0a:78:e6:94:b1:21:e8:46:33:
          e6:15:6a:25:4a:ee:6d:0a:d3:8d:e0:6a:9f:a3:94:c4:c1:77:
          fe:2f:79:03:91:3f:78:8f:3c:2e:8a:b0:0a:35:c9:2a:d7:04:
          9b:45:6e:8e:13:52:0c:67:b0:37:a3:74:df:fb:cb:28:35:a7:
          75:40:8e:7e:12:34:09:b8:24:93:cf:61:2f:a8:f8:73:9e:a1:
          bc:b6:9a:7d:7f:49:64:ee:a0:02:41:5f:43:af:ab:8a:2a:15:
          c8:bd:1d:a0:80:5f:da:59:19:20:ef:f4:df:a8:bf:2c:e7:77:
          6b:63:77:c6:a8:e1:59:1e:8f:63:b6:0e:66:aa:1e:11:61:91:
          7d:20:75:b6
------BEGIN TRUST_ANCHOR_UNCONSTRAINED-----
+-----BEGIN CERTIFICATE-----
 MIIDZTCCAk2gAwIBAgIBATANBgkqhkiG9w0BAQsFADAPMQ0wCwYDVQQDDARSb290
 MB4XDTE1MDEwMTEyMDAwMFoXDTE2MDEwMTEyMDAwMFowDzENMAsGA1UEAwwEUm9v
 dDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANWdX49yxT1HVTGAV+DM
 t29rfPSi8NmnmNGltSEJBoniGfZMd8J4LP4F/TWVAaFj5VHAPdxji23Zjcm/yQ7/
 QV0tVYWeJjHUp/QiWQ4XG6In+9467bMoarDMAAReAqcLrvPwL3Gk6hM8LGKlkYfN
 pksWlnhs5WEncrQG8Cc+b/jIAHoKGsJc7B4iUusVEbLt2MkdKpSTZjxRYDsZBn3G
 ZbT+DEAaY75wpKedHrG9BPCvzA+i/OJRQkxg565TMMINdNe973+TLmuy1P92rZfG
 tpckYcxsCMFepOAvq6qoRO8ubVD5eZ6HWESBGyLGUHtYZHor/ENNmlEaGw2bSsfv
 US8CAwEAAaOByzCByDAdBgNVHQ4EFgQU+lq7wTNMYjXa8bMR3FF1GT0AV1QwHwYD
 VR0jBBgwFoAU+lq7wTNMYjXa8bMR3FF1GT0AV1QwNwYIKwYBBQUHAQEEKzApMCcG
 CCsGAQUFBzAChhtodHRwOi8vdXJsLWZvci1haWEvUm9vdC5jZXIwLAYDVR0fBCUw
 IzAhoB+gHYYbaHR0cDovL3VybC1mb3ItY3JsL1Jvb3QuY3JsMA4GA1UdDwEB/wQE
 AwIBBjAPBgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEBCwUAA4IBAQB7adUkHD+N
 q3yHNQw4aGpacCXsQ47lAdTflSkX2mSLWpk84XdbAKJtAyH8MHUwO4T/GeePJ0fO
 KRgXbZ2VsPWr9xDuQCez9lNgdynNTdkpeq9zYG0Qn3V50rFPE7VE4ZwTj3TNT0bS
 8cF/7UC2etoKsdcC5REKeOaUsSHoRjPmFWolSu5tCtON4Gqfo5TEwXf+L3kDkT94
 jzwuirAKNckq1wSbRW6OE1IMZ7A3o3Tf+8soNad1QI5+EjQJuCSTz2EvqPhznqG8
 tpp9f0lk7qACQV9Dr6uKKhXIvR2ggF/aWRkg7/TfqL8s53drY3fGqOFZHo9jtg5m
 qh4RYZF9IHW2
------END TRUST_ANCHOR_UNCONSTRAINED-----
-
-150302120000Z
------BEGIN TIME-----
-MTUwMzAyMTIwMDAwWg==
------END TIME-----
-
-SUCCESS
------BEGIN VERIFY_RESULT-----
-U1VDQ0VTUw==
------END VERIFY_RESULT-----
-
-serverAuth
------BEGIN KEY_PURPOSE-----
-c2VydmVyQXV0aA==
------END KEY_PURPOSE-----
+-----END CERTIFICATE-----