test: rebuild test certs with 2048-bit RSA keys

The previous test certificates use 1024-bit RSA keys and SHA-1 for
signatures. They are somewhat deprecated. This commit updates the
certificates with RSA-2048 and SHA-256.

test/cert1.crt

 -----BEGIN CERTIFICATE-----
-MIICOTCCAaICCQD6TiOx55+OsDANBgkqhkiG9w0BAQUFADBhMQswCQYDVQQGEwJD
-TjERMA8GA1UECAwIU2hhbmdoYWkxETAPBgNVBAcMCFNoYW5naGFpMQ4wDAYDVQQK
-DAVCYWlkdTEMMAoGA1UECwwDQ0JVMQ4wDAYDVQQDDAVjZXJ0MTAeFw0xNjExMjgw
-OTEzMzRaFw0yNjExMjYwOTEzMzRaMGExCzAJBgNVBAYTAkNOMREwDwYDVQQIDAhT
-aGFuZ2hhaTERMA8GA1UEBwwIU2hhbmdoYWkxDjAMBgNVBAoMBUJhaWR1MQwwCgYD
-VQQLDANDQlUxDjAMBgNVBAMMBWNlcnQxMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCB
-iQKBgQC8r8469OdZ+MeZiWBsV/7XlusjjnwKP2asmEepzkZXmxX1YEuXRuKkH7zJ
-VTg1DCwgTnpCvd0Y1kJ9WOonB5433gnDR32fJ2lswmpFmh+yaZmcTn5MZmE1b4AM
-QJ/BEXJcIiKWYMgqh6nw/N+eWymQzmZSC9R/JWgmee/kRRoaiQIDAQABMA0GCSqG
-SIb3DQEBBQUAA4GBAGs1o7SkRa9YcDjcbZziNPLOdoZueACxtCLPn4/DZWOiFPku
-PitB9UaGkiivKYKwmC1nnE2VyYcCIIGqIQ6GtagNPE6DAcd8TFviIHs6jnGhC7Y/
-ZEePLNpEx9HFkJiQzmH+mMfGftZFBwu9cF4Qa7DzCjMSb+s5qrT/WUXobEch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 -----END CERTIFICATE-----

test/cert1.key

------BEGIN RSA PRIVATE KEY-----
-MIICXAIBAAKBgQC8r8469OdZ+MeZiWBsV/7XlusjjnwKP2asmEepzkZXmxX1YEuX
-RuKkH7zJVTg1DCwgTnpCvd0Y1kJ9WOonB5433gnDR32fJ2lswmpFmh+yaZmcTn5M
-ZmE1b4AMQJ/BEXJcIiKWYMgqh6nw/N+eWymQzmZSC9R/JWgmee/kRRoaiQIDAQAB
-AoGAEaGr975iz/l7TVGU/QrL+YFUv6HU3XBHO+GO8MMht5X6W0+AQMaS7xs4HOgl
-tG9KwEoVCp+LRYLf+66PUs5Xbl/qSYnrGz4r+H/Fv1xf1PjUFwlHyLW8dkh4kibq
-jQ2W9zrEjkZi+MhkYBAMvczAjmunI+ZehIDyQJ3SJnN5qrECQQDkYYyPGGmrqMWY
-B6dZdB78JN03ip9PLljV9MqoAR2NUlFhLLlwSkLN8lrAwQ2XxvfhbDdaRnx8z6x/
-E0sG3lfbAkEA04FcKr2db2lspwfb3WFx9S/cdiTrkGCtPXVovrbit0p6tm9hv8gD
-rSC+WQNmZXs2QzFNdm2eWrowEdI4XCjGawJAQ/MOKgkeb5eAatJkJUZabbTeKMdS
-zPFCNy5lGYVzcHe8hMgUyGcf5zyjadRGohDt8aEL+w0bvtrfPNPVr855nwJBAM2g
-D14SOJRPV23QSyYgja0FGf3WiRo1k1eT5QC9Rw9RnpntEYhlSYWwtr5NeuigcDHF
-Jf1EN1cXepJo4Zhfn/8CQDgRvF9tesalPfRMQTP+OitLQw60ngMaOCXgr9cevWU0
-iPiToCki18hVQtM5pWt/83K0B2NLYbluoOXNKBkEQvA=
------END RSA PRIVATE KEY-----
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----

test/cert2.crt

 -----BEGIN CERTIFICATE-----
-MIICOTCCAaICCQDwZoNAUJYKizANBgkqhkiG9w0BAQUFADBhMQswCQYDVQQGEwJD
-TjERMA8GA1UECAwIU2hhbmdoYWkxETAPBgNVBAcMCFNoYW5naGFpMQ4wDAYDVQQK
-DAVCYWlkdTEMMAoGA1UECwwDQ0JVMQ4wDAYDVQQDDAVjZXJ0MjAeFw0xNjExMjgw
-OTE2MDRaFw0yNjExMjYwOTE2MDRaMGExCzAJBgNVBAYTAkNOMREwDwYDVQQIDAhT
-aGFuZ2hhaTERMA8GA1UEBwwIU2hhbmdoYWkxDjAMBgNVBAoMBUJhaWR1MQwwCgYD
-VQQLDANDQlUxDjAMBgNVBAMMBWNlcnQyMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCB
-iQKBgQDB37VXm4I4apWHysL77GX6ohqLaGxhZ6fnl7qGVqpCe4c5+jMLDKRagNmV
-dDFObjDFnchZ5qM0lbW21jp5v1gxz9C/j6X7Hsl/HO6hS09B1I/Q3UhTjKKsnZSY
-WRcUF/t9YVWtzEDKtKgTcLBQrotxzh9qP/GliHbTLsojvmsVgQIDAQABMA0GCSqG
-SIb3DQEBBQUAA4GBAA1Y17J13GE7gvfGPz5fKkD1eQUFtiR0JGltaU64neuzYG4C
-R+tlnngtzpJf1bcNqITcSwCiEqrkccIbYTCXfHpV1G2w/7Ce13dTOZwsViI2tJWt
-8dWCAHcRvQXRqWm9G8TWwx8hDJJT8U2O71FNkIvqEBSkY0mLgfHXj5cnh0WQ
+MIIENjCCAx6gAwIBAgIJAPBmg0BQlgqLMA0GCSqGSIb3DQEBCwUAMGExCzAJBgNV
+BAYTAkNOMREwDwYDVQQIDAhTaGFuZ2hhaTERMA8GA1UEBwwIU2hhbmdoYWkxDjAM
+BgNVBAoMBUJhaWR1MQwwCgYDVQQLDANDQlUxDjAMBgNVBAMMBWNlcnQyMB4XDTE5
+MDEyMzIyMTU0MVoXDTI5MDEyMDIyMTU0MVowYTELMAkGA1UEBhMCQ04xETAPBgNV
+BAgMCFNoYW5naGFpMREwDwYDVQQHDAhTaGFuZ2hhaTEOMAwGA1UECgwFQmFpZHUx
+DDAKBgNVBAsMA0NCVTEOMAwGA1UEAwwFY2VydDIwggEiMA0GCSqGSIb3DQEBAQUA
+A4IBDwAwggEKAoIBAQCcbPV5j9eex7cnAsUMMreZ9H76yUgp1Y54gR3TqSELYjtu
+XwudIKVQGawPcoFIysvapDBXSj6LgEWVXSqs8bVSUW7lmraSKGJ+wIXmZFHvweaY
+7rXpSma357i0do5VLvIZS9ZRN40SAS6EaSqgpvD3ISeT4xHaiQ/XtKLc/dCSmNSd
+tXsH/CHvcGxEH78i+n2lNjHnabZ+aLTnEQ59R2wDPqymHb2j9gz3QMlM50m7vK83
+v42lhObPQ/JZBs/0taWv6GbFIMYVLwUiCmIb7ecJk1/k3gBo6VYQ5tnnyhcUdTvv
+sWv94KuUU8OmPzJLSo6nKXSE63cIgTOGDR1YmqhNAgMBAAGjgfAwge0wDAYDVR0T
+AQH/BAIwADALBgNVHQ8EBAMCBsAwHQYDVR0OBBYEFOuA5h9dbBrkxeUiH7cSNxV5
+ygP0MIGTBgNVHSMEgYswgYiAFOuA5h9dbBrkxeUiH7cSNxV5ygP0oWWkYzBhMQsw
+CQYDVQQGEwJDTjERMA8GA1UECAwIU2hhbmdoYWkxETAPBgNVBAcMCFNoYW5naGFp
+MQ4wDAYDVQQKDAVCYWlkdTEMMAoGA1UECwwDQ0JVMQ4wDAYDVQQDDAVjZXJ0MoIJ
+APBmg0BQlgqLMBsGA1UdEQQUMBKCBWNlcnQygglsb2NhbGhvc3QwDQYJKoZIhvcN
+AQELBQADggEBAGlEgAyI0R/phfGbdbMdF2WtcbflZrs1wsX4y2zUcmKJt7CkAED/
+tj33gHh0qg3eWADUQ3AZ5iCalY86NcKsDoIT2mJn7oO6ejovGOnjQbF53HhY7MIy
+1xqGu3MYWc8XuuqnvSqS//sokEVqIm9bAnZaY32cjsrHqZcYCPZbMqSOwqSnz3Ia
+fDMw21GOVtgWIXrRFVykTZ9nzey16EB21ry9gci89+1sy5bz0fhXUG1XFguXj8zH
+clAzL1mzjYQ1SWMzMmCX7GiiwjkNkiTr6grGQCDBTaIg5E1firkJm3GFJRXmZKSZ
+FYR32SX4H3vj6cHf2iu7ilN5t9EQ60KPQ+k=
 -----END CERTIFICATE-----

test/cert2.key

------BEGIN RSA PRIVATE KEY-----
-MIICXgIBAAKBgQDB37VXm4I4apWHysL77GX6ohqLaGxhZ6fnl7qGVqpCe4c5+jML
-DKRagNmVdDFObjDFnchZ5qM0lbW21jp5v1gxz9C/j6X7Hsl/HO6hS09B1I/Q3UhT
-jKKsnZSYWRcUF/t9YVWtzEDKtKgTcLBQrotxzh9qP/GliHbTLsojvmsVgQIDAQAB
-AoGBAKodxB+lYrRiQecvcbxgiHNN/oDJFiC6NciviIoMTcWcYuHquxM8+pI3cbUE
-iadKZR1h/8Vy7U5c92ABxrnBvn4epy1hKm9N1oidb+wSGLcaV+9YGzuNIQeqXmM5
-26IUjzQsObULM2cp/AianzrlkBL2j7kH/A3a4shdrtj4P1OBAkEA8UiCwAEMPIGY
-nDMr6JeNBHkkBQcoY5kuuW902qTCI5M8g6canNsjYEA0Im8YvHsz+9K2YhdIj8F7
-KZtM5mkWCQJBAM2y7eYJhZmKaCwhLGLrO+QLoJ7DOzPg/JAUKWDEhEs1uSUPqTwg
-ghAOynyP6wHxXLIaD9BC88zWoM26IVxLIbkCQQCcHMFUP5lOML+wGL/JHv1Drqmq
-gyYTwxHjMwUVTlK6N9KIj/79DCBIb2IMAXusv74zqfMNZmkxcgshMXVBAy8ZAkBM
-1NuVQ9M6IX99lDp/DDxHlqw9ANE5NH1B17YI5f5AFWX9WNculTnfg5bQZfUyuZOV
-FrT3ZjqoNTbFARP65DlJAkEAtlBLITLqHdq2C4jzHLjXm9vRe2Fsz759ywDy1RCk
-2f54B9uUFjzaHl5Z8WVpO6loVBcOu685ROCwfMVW1HRWzA==
------END RSA PRIVATE KEY-----
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----