Add script that generates X509 certificates for testing dart:io SecureSocket

tests/standalone/io/certificates/untrusted_server_chain.pem

Index: tests/standalone/io/certificates/untrusted_server_chain.pem
diff --git a/tests/standalone/io/certificates/untrusted_server_chain.pem b/tests/standalone/io/certificates/untrusted_server_chain.pem
index 7d30df0a9c692a54c19f014f51e264700f05a4a0..132c1f440e767a12e12c9515dd191d63bbd43837 100644
--- a/tests/standalone/io/certificates/untrusted_server_chain.pem
+++ b/tests/standalone/io/certificates/untrusted_server_chain.pem
@@ -1,57 +1,57 @@
 -----BEGIN CERTIFICATE-----
-MIIDKTCCAhGgAwIBAgIJAOLkVK1iIzcgMA0GCSqGSIb3DQEBCwUAMBcxFTATBgNV
-BAMMDGludGVybWVkaWF0ZTAeFw0xNTA1MjgxNTAyMTlaFw0yMzA4MTQxNTAyMTla
-MBQxEjAQBgNVBAMMCWxvY2FsaG9zdDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCC
-AQoCggEBAJTI9uVvjQ5jsHB+UcqhXOKXmt8QlK3gOZKYs9lCFoQYWVug3daDCYp6
-p1N7/lM+V0sDhYfALBjT9aetviTck8ZJ5rCJ1xzyY16/LnvTI9wjBeizyar5K57A
-vRwX+PB4OQi4nKszWXB++jYu7AYJsIwQwkNAk5kkpaVRlWqYkDm6JqtD6hAPxQV4
-0rrqQAXBY+SP0C8buhVNDmnkshmJnHnb/yodNmwdK0CkSN9TbVZi3UpsDRL1Tbo/
-i7fRrfVK5aTjdjT7yx/5Wh2jQ4nBdm7l5BFc2owHk0FGB9h5GMgs19RzHf+O+JCc
-SabuVSehtagIouiwHOJ5iFtiq6enF58CAwEAAaN7MHkwCQYDVR0TBAIwADAsBglg
-hkgBhvhCAQ0EHxYdT3BlblNTTCBHZW5lcmF0ZWQgQ2VydGlmaWNhdGUwHQYDVR0O
-BBYEFKpMad7rFfjy9iTqyCBJSWORnxqoMB8GA1UdIwQYMBaAFDqe3VrQlMZ2ABqb
-w16kdoDbumRuMA0GCSqGSIb3DQEBCwUAA4IBAQC9rRoBEcCZBVCBVZdckq0cWVYB
-IoMnpGk1ODv5Yp2b36LR3wwr2g+2u61s767L0+2ZGbGACkzWi3rJFSWIiH2j5zmi
-e+TvuOXFbw0r2PtiYDaoWIExzkC3rxnCSlUdbRPw1LI8bEd3+PYeZcEW0zs+xaId
-lctsWe8QC7EW3trLUFc8ASjED4uO83+2toqljkrD4SDnVz8t7O6bNrKrEDkNrxDW
-NHrbSP8m666U/A4MpH55BArfHNlUbzOZ6/jOkvcqhbL1pccJ2U1Ov3GnQGk7Vg+D
-JD1ptD6AHnjA8PCSkDOPibG4w9lRFWaUeAjtuCq1xJ3RFe5aUcUqgcxyF38B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 -----END CERTIFICATE-----
 -----BEGIN CERTIFICATE-----
-MIIDAjCCAeqgAwIBAgIJAOLkVK1iIzcfMA0GCSqGSIb3DQEBCwUAMBgxFjAUBgNV
-BAMMDXJvb3RhdXRob3JpdHkwHhcNMTUwNTI4MTUwMjE5WhcNMjMwODE0MTUwMjE5
-WjAXMRUwEwYDVQQDDAxpbnRlcm1lZGlhdGUwggEiMA0GCSqGSIb3DQEBAQUAA4IB
-DwAwggEKAoIBAQDS0BrhfsYaZcm68pdZ2j+TWXa/Ba5s3sKq9+EFcI5ZSq8/Atn+
-V17OgyjUYQDS//8lk0UydvHQmI6lTSAlLbIDfHMQZ1qxKGV75IgLmHO2RCoJ0W2p
-V74m6EZ3cMMOAFJ1WO292ee1H3ZynZSJcj5jxzLzJwOzaz9IjVVLpRdvm2xkhuIa
-M10aYn3gohGLaq8fe8sQx4ezx6nlqAFK1rZrMKgmPoDaV/Vsin71QywAjOApMp/c
-GkQjRzmUQf12NfXuvQU6ZP0M16e6Od0oAUFM+t0OjFUCcfhwRfGsoSesLof3Gc8+
-eJ7LbOFxWMvsFwsXkmeDvE6yuihBlPm38Va3AgMBAAGjUDBOMB0GA1UdDgQWBBQ6
-nt1a0JTGdgAam8NepHaA27pkbjAfBgNVHSMEGDAWgBSjeMkHbMP4BXJRnx4iJOhN
-ir7L+DAMBgNVHRMEBTADAQH/MA0GCSqGSIb3DQEBCwUAA4IBAQAyQYc8ZrQZAlGw
-I0AFYaG/T3waQFr48j3evBEO9RT/3E8+rNbW4QKyzovJhBiNwkqJhn+WNW7B43zT
-jG3MqH3FTcQfjcXGxFUPh1HntMz7RbXs3Pv5G1f5knk6Hy63vG432kAEUZbrAdKV
-yBnR3/VqZd8cX1nzZkhEh9ePz6XTsKctXaHfnenQZJ3YwwNAwlNiNeXB/ykJliyh
-8AJxBQdx76TudXB0pl92bK0nsNVczGXg4UZ80GbCHGoYV9ZjQCX/G5ocquMB11Ou
-2n9iHTPHMdkahDvWwHggLXrCZK2to4N5zYz33dMhnRiR5hVZKaxuql1j9O2kwLCD
-Yb7VgstA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 -----END CERTIFICATE-----
 -----BEGIN CERTIFICATE-----
-MIIDAzCCAeugAwIBAgIJALj/jZ2qE13WMA0GCSqGSIb3DQEBCwUAMBgxFjAUBgNV
-BAMMDXJvb3RhdXRob3JpdHkwHhcNMTUwNTI4MTUwMjE5WhcNMjMwODE0MTUwMjE5
-WjAYMRYwFAYDVQQDDA1yb290YXV0aG9yaXR5MIIBIjANBgkqhkiG9w0BAQEFAAOC
-AQ8AMIIBCgKCAQEAp3u9wYL5IexhJAzuCDI1nL/JFT5itluFcGA2UjKF12hDUG5b
-ipvG8Oxi7oOo9Nk32sw5hqNVyCXp35znOZBnnQn6kkLNENRZ0JlprBYZVG+2jTZI
-jxSq8kYWMkeP21BmwfgPuorpfM8ClDCHbrOJuHFeP1U/rqj7A2Hw1VjuPD+5VmWK
-N8EeZsis1vOKWtrQfwEukCUfu6gScsIFa9Pie7r5YufYYWMUGPktI0r1r0S9iTY2
-femCqWIL4jfYKQ8d0ibYE7obM/fhIYUyhSZyCes3ffDpP22/puwkwZMopqIXaB17
-At6q4YXv9RjJQm/CXGoMBzddAiQbpStKA3nAxwIDAQABo1AwTjAdBgNVHQ4EFgQU
-o3jJB2zD+AVyUZ8eIiToTYq+y/gwHwYDVR0jBBgwFoAUo3jJB2zD+AVyUZ8eIiTo
-TYq+y/gwDAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAQEAjOWWBiCBmzfu
-pvct3CMMDAgLB+N51SrDeowG++Zyv8mtEzaC2nSD2rwztrHKbRInflH5FclFFFKr
-EY7wfL86MZUECpA7QjRpwhaqe7d2uUmi+kOSg3I9AL0KVdM4jOIcNTrzrDjaUpsF
-v9U4ounXQyRI9x8H/v8rzMMQmEeq3DyKqOr6y46U6SspDDlLcGGxQz1olmNYsxw5
-ftY1/Q58HGDsUEMUC2hOCsKw8XxSguLln0inMXpws+rWOZLETN4+WMxZojYmLqz+
-DksVeUKBx1IJx3WLNkj/qk55w/4dJPBfddNJ76KFKxxYwzZ851Y9f6+OndRTGW1n
-XJOiJnRvlQ==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=
 -----END CERTIFICATE-----