THRIFT-2325: SSL test certificates

CN for servername was ssltest instead of localhost
+ little update of README.md

Patch: Roger Meier
diff --git a/tutorial/go/server.crt b/tutorial/go/server.crt
index b345bf0..8a5ef3c 100644
--- a/tutorial/go/server.crt
+++ b/tutorial/go/server.crt
@@ -1,20 +1,25 @@
 -----BEGIN CERTIFICATE-----
-MIIDRjCCAi4CCQC7ZHL2gkCrNDANBgkqhkiG9w0BAQUFADBlMQswCQYDVQQGEwJV
-UzEPMA0GA1UECAwGVGhyaWZ0MQ8wDQYDVQQHDAZUaHJpZnQxDzANBgNVBAoMBkFw
-YWNoZTEPMA0GA1UECwwGVGhyaWZ0MRIwEAYDVQQDDAlUaHJpZnQtR28wHhcNMTMw
-ODAyMTM0MzM0WhcNMTQwODAyMTM0MzM0WjBlMQswCQYDVQQGEwJVUzEPMA0GA1UE
-CAwGVGhyaWZ0MQ8wDQYDVQQHDAZUaHJpZnQxDzANBgNVBAoMBkFwYWNoZTEPMA0G
-A1UECwwGVGhyaWZ0MRIwEAYDVQQDDAlUaHJpZnQtR28wggEiMA0GCSqGSIb3DQEB
-AQUAA4IBDwAwggEKAoIBAQDBIkwFBgvHNS4yR8VYqYgd6bZtE1bJSdUHAOmASYwF
-Q5dDGltiwwWJiyLQ6njgcugqJ+5Icn2i7zd3kWXuTi6uNHlDzAy253uRj0skhXIA
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-FzuW8WjtE1A28JL/hR6YcxaEDTulaFhaKs8=
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+r5p9FrBgavAw5bKO54C0oQKpN/5fta5l6Ws0
 -----END CERTIFICATE-----