Update SSL error handling code to account for Subject CN deprecation

net/data/ssl/certificates/subjectAltName_www_example_com.pem

Index: net/data/ssl/certificates/subjectAltName_www_example_com.pem
diff --git a/net/data/ssl/certificates/subjectAltName_www_example_com.pem b/net/data/ssl/certificates/subjectAltName_www_example_com.pem
new file mode 100644
index 0000000000000000000000000000000000000000..88a338eee200a624f67665d64d7bb431479e1d1b
--- /dev/null
+++ b/net/data/ssl/certificates/subjectAltName_www_example_com.pem
@@ -0,0 +1,75 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 15837232328995864193 (0xdbc926e4db217e81)
+    Signature Algorithm: sha256WithRSAEncryption
+        Issuer: C=US, ST=California, L=Mountain View, O=Test CA, CN=localhost
+        Validity
+            Not Before: Mar 28 22:42:07 2017 GMT
+            Not After : Mar 26 22:42:07 2027 GMT
+        Subject: C=US, ST=California, L=Mountain View, O=Test CA, CN=localhost
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                Public-Key: (2048 bit)
+                Modulus:
+                    00:b5:12:3c:e3:76:25:c4:e5:9f:ac:69:3a:dd:40:
+                    78:95:ef:1e:f2:b6:c2:74:14:e7:ba:cc:f3:a6:46:
+                    6c:51:1f:2e:4e:9c:99:7a:82:1f:43:bc:28:8a:74:
+                    8e:52:73:59:24:ac:0a:71:c9:b5:30:a9:d3:85:f9:
+                    8c:76:d0:19:43:fe:cb:c0:d6:4b:9e:9b:76:63:84:
+                    ae:99:4d:14:a2:be:ae:81:5d:05:22:b9:46:39:66:
+                    4e:42:10:57:64:26:27:f2:88:7f:55:10:38:83:7a:
+                    dd:6c:09:ae:f1:09:33:04:84:ab:48:53:1c:9c:42:
+                    b4:f7:ee:c5:21:7a:65:56:91:64:99:9b:f4:2c:22:
+                    50:dc:36:35:ac:04:22:eb:5c:2d:4c:6c:4b:16:70:
+                    f7:13:36:f9:32:ec:6d:e8:f7:2e:f2:b9:b8:0c:e2:
+                    99:de:ed:61:7d:66:17:33:67:0e:6e:87:5d:05:65:
+                    e1:98:46:2c:e7:8e:6d:a7:20:ab:87:5b:f3:32:55:
+                    cb:2d:df:76:9b:cf:06:71:5c:06:77:3b:20:49:6b:
+                    47:5e:6e:ae:42:99:8b:8f:9e:c4:ba:4c:50:ec:14:
+                    a1:43:8f:24:e9:9a:c8:ca:ec:b3:e2:26:d4:a5:ba:
+                    c3:f8:90:b1:03:2a:05:72:a4:3f:17:bd:9c:af:68:
+                    e4:17
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Basic Constraints: critical
+                CA:TRUE
+            X509v3 Subject Alternative Name: 
+                DNS:www.example.com
+    Signature Algorithm: sha256WithRSAEncryption
+         38:41:86:d5:01:6b:00:3d:61:1e:ad:f1:82:1d:01:fc:c1:98:
+         8e:d7:ea:46:2d:e3:7c:22:3c:ce:f2:64:f0:73:0c:e5:ea:21:
+         3a:8f:63:e1:c0:27:3d:84:ed:0f:aa:0e:d3:ca:76:67:ba:b9:
+         f4:da:fc:d5:ec:07:f4:97:08:2c:55:e4:be:5f:0c:e7:c9:7f:
+         be:81:b5:76:d2:47:6b:be:01:82:8c:75:27:df:78:99:62:55:
+         74:91:d9:c7:37:a3:62:1f:36:0b:ed:9f:54:01:be:87:9a:3d:
+         d5:90:1e:98:13:29:cd:23:9b:d4:a8:d0:c0:18:04:d5:05:55:
+         97:8d:6b:89:14:0a:1b:b4:2b:bd:7d:05:68:87:72:64:9e:b9:
+         66:a2:89:21:2a:ae:a1:b3:ef:22:0d:e1:80:46:52:11:20:3a:
+         a8:7e:18:1e:e1:19:2d:f5:de:cc:b9:f2:ff:6a:88:db:c1:31:
+         dc:34:25:e2:c0:4c:a7:6e:28:6e:b1:10:7b:04:ed:a4:82:3a:
+         81:55:44:1a:87:25:14:69:de:2d:c0:7d:3b:e3:21:c4:21:e5:
+         ca:f6:7c:11:12:d8:7f:c1:b7:f5:45:ca:6b:e5:41:91:5d:d8:
+         db:64:48:01:64:a5:df:85:51:4b:c4:ed:27:e3:2f:b4:71:f4:
+         c6:a1:a2:ad
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----