stunnel: regenerated self-signed test certificate with SHA1 hash

The previous test certificate contained a MD5 hash which is not
supported using TLSv1.2 with Schannel on Windows 7 or newer.

See the update to this blog post on IEInternals / MSDN:
http://blogs.msdn.com/b/ieinternals/archive/2011/03/25/
misbehaving-https-servers-impair-tls-1.1-and-tls-1.2.aspx

"Update: If the server negotiates a TLS1.2 connection with a
Windows 7 or 8 schannel.dll-using client application, and it
provides a certificate chain which uses the (weak) MD5 hash
algorithm, the client will abort the connection (TCP/IP FIN)
upon receipt of the certificate."

tests/stunnel.pem

@@ -60,17 +60,17 @@ Certificate:
     Data:
         Version: 3 (0x2)
         Serial Number:
-            09:c2:f9:ca:9a:d8
-        Signature Algorithm: md5WithRSAEncryption
+            a4:17:70:09:88:8c:48:cd
+    Signature Algorithm: sha1WithRSAEncryption
         Issuer: C=SE, ST=Solna, L=Mooo, O=Haxx, OU=Coolx, CN=storbror, CN=localhost
         Validity
-            Not Before: Jan  5 11:25:13 2004 GMT
-            Not After : Feb 13 11:25:13 2008 GMT
+            Not Before: Feb 22 15:38:48 2014 GMT
+            Not After : Feb 20 15:38:48 2024 GMT
         Subject: C=SE, ST=Solna, L=Mooo, O=Haxx, OU=Coolx, CN=storbror, CN=localhost
         Subject Public Key Info:
             Public Key Algorithm: rsaEncryption
-            RSA Public Key: (1234 bit)
-                Modulus (1234 bit):
+                Public-Key: (1234 bit)
+                Modulus:
                     03:59:37:ea:06:ea:f2:7c:0c:0c:de:f8:5b:ce:29:
                     24:b8:f5:7e:31:18:cc:40:2e:12:91:2e:14:10:6f:
                     ba:af:33:ee:c1:70:c8:11:bf:e4:4a:c6:45:fb:48:
@@ -104,37 +104,37 @@ Certificate:
             Authority Information Access: 
                 ad dvcs - URI:https://localhost:8433/509
 
-    Signature Algorithm: md5WithRSAEncryption
-        02:47:57:18:5f:54:3f:1d:29:0a:05:7a:d1:0f:e6:b9:2c:8b:
-        29:38:50:bf:c1:a1:7f:73:4a:9d:f1:1b:bf:2e:ea:87:91:dd:
-        ff:75:73:57:78:cf:75:52:57:0b:5b:bb:d4:77:b2:dd:e8:0c:
-        06:ce:1b:c0:3d:9f:68:c0:0b:66:b8:f9:46:db:04:a9:2f:a3:
-        5e:9c:c6:70:ff:1d:af:1f:17:9c:38:3d:12:aa:af:7b:72:44:
-        a0:44:41:6b:9a:9b:60:8c:50:94:f1:d7:a5:77:6b:d3:0e:66:
-        88:a1:52:63:23:f6:66:a6:ea:f9:d0:df:4d:8a:14:f0:73:c6:
-        b6:b6:b6:68:4f:3d:9a:b6:31:ba:19:f3:66:9f:16:6d:87:64:
-        32:53:d2:90:e5:8c:1e:f5:18:61:1a
+    Signature Algorithm: sha1WithRSAEncryption
+         00:45:db:09:5b:08:5b:1a:ff:71:50:6c:12:ad:8e:78:32:1d:
+         7d:e7:e4:d3:3e:5f:ca:20:84:aa:ff:9a:c2:b6:a9:48:93:1f:
+         73:27:d1:68:05:76:36:f9:c1:53:90:ad:8a:c0:b3:12:c8:11:
+         5c:2c:65:01:ac:31:d1:8e:60:6e:c6:f5:ba:9d:69:e8:f1:ac:
+         4a:de:52:94:cd:06:24:45:72:64:89:0f:57:8b:26:2b:16:cf:
+         0b:27:c4:e8:73:c7:d3:e5:42:38:95:57:b5:bb:83:b4:92:d4:
+         e0:cd:fb:c8:f5:d2:da:1d:11:fe:3c:18:20:8b:bd:22:31:1c:
+         5a:82:d4:f5:71:8d:8a:e3:13:82:c5:2d:f3:9f:d0:b7:b8:4b:
+         d2:46:9d:8e:1a:d7:99:6e:c1:b9:a0
 -----BEGIN CERTIFICATE-----
-MIIDujCCAwigAwIBAgIGCcMA3QkhMA0GCSqGSIb3DQEBBAUAMHIxCzAJBgNVBAYT
-AlNFMQ4wDAYDVQQIEwVTb2xuYTENMAsGA1UEBxMETW9vbzENMAsGA1UEChMESGF4
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+9dLaHRH+PBggi70iMRxagtT1cY2K4xOCxS3zn9C3uEvSRp2OGteZbsG5oA==
 -----END CERTIFICATE-----
 -----BEGIN DH PARAMETERS-----
 MIGHAoGBAMq/KFGh2oy16WzkFs1U71Uz7dIEKvSYfc+zo439pYyVzcD8MkcC15Zb