all: fix the example certificate and key for DNS over HTTPS

Previously, the Common Name (CN) for certificate is not a valid local
domain name, because we tested it using IP address instead of domain name.

This commit use the "localhost" in certificate CN and in configuration for
DoH in browser.

4 files changed, 61 insertions, 52 deletions

diff --git a/testdata/example.cert.crt b/testdata/example.cert.crt
deleted file mode 100644
index 0150108..0000000
--- a/testdata/example.cert.crt
+++ /dev/null
@@ -1,24 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIEBzCCAu+gAwIBAgIUJYHUkLhtYbIcfjnslpHyKqOCxY0wDQYJKoZIhvcNAQEL
-BQAwgZIxCzAJBgNVBAYTAklEMREwDwYDVQQIDAhXRVNUSkFWQTEQMA4GA1UEBwwH
-QkFORFVORzEVMBMGA1UECgwMS0lMQUJJVC5JTkZPMRUwEwYDVQQLDAxLSUxBQklU
-LklORk8xEDAOBgNVBAMMB1NIVUxIQU4xHjAcBgkqhkiG9w0BCQEWD21zQGtpbGFi
-aXQuaW5mbzAeFw0xODA5MTgyMTEzMjNaFw0yODA5MTUyMTEzMjNaMIGSMQswCQYD
-VQQGEwJJRDERMA8GA1UECAwIV0VTVEpBVkExEDAOBgNVBAcMB0JBTkRVTkcxFTAT
-BgNVBAoMDEtJTEFCSVQuSU5GTzEVMBMGA1UECwwMS0lMQUJJVC5JTkZPMRAwDgYD
-VQQDDAdTSFVMSEFOMR4wHAYJKoZIhvcNAQkBFg9tc0BraWxhYml0LmluZm8wggEi
-MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCckWPz7mzmx8/TYm3tg2W/cVMc
-clraj+Gkf6KPEeZp310iWnQNV/DVNe+a1W8qrCgKT48xpWu/vqwmsUqpPe/sSGl2
-FJPyJORwVq4aKZkv1UAqk/5t/2bH69Meg+m0SznrVw7egvw/syUInT0Z27KGWmp9
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-gBTk99WkqIL8oDVQwtP46WXeXtJ4KzAPBgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3
-DQEBCwUAA4IBAQAWYPRf2F9eE4EPuNBd6bEEbLEceL56b1C11Sivf4DW2PJwYbvd
-0Uky7Hc0FkBEVL1a0GA+sJ0mNsTVTs/O8cU5VLkKCmoEuewlDF2YliH/mY6A5NDV
-sumblp0JrpH4L6DEX2ktZ+9tTzguvg6HGZOR+HgBP6xaSpm8Tb06iYfgYtehTNEW
-s6Ws67+E59qQFMKTMgqudkixNsr2CkdjtBCdPRQ8Y/Mj3yl57npnLQi/ltpq1BBH
-i6wfhTGQX4uo0XU7hSZw9Nx1BQ4TreO3kirnN7kNxxPBwZyg4+I7YAJ3SKDCEQ7O
-g6zg8CQQHszwsso4BMwZfIIJtpocu8Qba81g
------END CERTIFICATE-----
diff --git a/testdata/example.cert.key b/testdata/example.cert.key
deleted file mode 100644
index 4660b94..0000000
--- a/testdata/example.cert.key
+++ /dev/null
@@ -1,28 +0,0 @@
------BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCckWPz7mzmx8/T
-Ym3tg2W/cVMcclraj+Gkf6KPEeZp310iWnQNV/DVNe+a1W8qrCgKT48xpWu/vqwm
-sUqpPe/sSGl2FJPyJORwVq4aKZkv1UAqk/5t/2bH69Meg+m0SznrVw7egvw/syUI
-nT0Z27KGWmp9duMibgGSSHoBbw4y+EPVXQnMI0kDsB9hRxddu/gTxSoia6vJf/IF
-wqAWvECzzUjJYbI2Lq6I3U11ejc7XIGXB23uKnas0/aOlWMV7OHnDKqEZ7FEohe1
-IXwOQU0cLJ94P82u1flzdh9ntjIH0LOfNrpYk5Kvll4Cm1u9HPLCC9lfUoMhDb2M
-3x24Q78XAgMBAAECggEAbiKkEhKVDp5d5k+mDl7Q8yNvmGIk4Pw3ePTD0CqCT9Vs
-+V5xpnVHF2RSgTNEeNsTa3VdwEmiCwbAqJMsdvL309l4PjTpgXtMKm3/GK5McOZs
-tcbXQl9X2KheIWgfvNDyFEdwUTwI33JQScf6FDeEVJhDsrAvxKdneZR8JogNj/IU
-Z88jI1Qfc4DamfVi3cEAfXn2i0Vo1nvfHFbxUZqQkmw4RjYum+keDKg0fLa907zH
-yV6zcqxsqDktwX9QW176M9WZ7yB6H0XNjSAkSrOFgVgOd6tSbYeGWlVf5Axw0B5I
-5C2iV0CmVMSWjnCwEe0D16H/DgT9/VXSbvEboTJ6YQKBgQDL1ScVc7+6PQLXsuLe
-I80cQBQ7rSE/J0DPG5gIFZgGrJi4zM7lo6Dnyb0W8AvFPpSHuEsYO38p/NOuBiBi
-uvqFxpiGQudxZtYFEWwDr1Ay0NOu89UQbxo/48Bgz/KRfYJ6JIgMUJ9xeB7YjZE2
-Mrxmu5DugY+5MFS9UFouxNL50QKBgQDEo4RDdlF5BXraNymeLfS10cGUTx6WkiC4
-G04Hjl9LEJ0BY1oSBg19l6AxVzfHPYgXVWVDq7TTo5okH6eHd7h7qdeXj3UlyQSl
-47K1QU5s+sfwoqjuvm/awhU7qrQlY0GTHn/MXMEBX5DTHEuemT9m+jyTS4K3zWU2
-bf/QKGB8ZwKBgQC1NLtYMNyjnpWmWFujjERN9xGFs/Y4hJbzB97yYPAUDuB+eWT9
-dagYJ5q4h5KPOYEl3sqzskDsfN1aegvUedE5mEIEKfpDMF7XhpN1+yba5hcqE464
-22yEm95ssrE8ck3KdCuWdx4n69fQQJp1ikk/M0Q3JGs3ASZ0Xritl0DP4QKBgHRM
-pchkrTEfrZZsc7/rPEVhBtXZqaSyTom1FIRhjzjNXZ7ZjQcF72qtiABGrmW3ncr3
-JcpNPsjBhUQCOMplY4Y4YJtyLH4pkwcuUZ7kPic0d5Z6DeIOXgeLLJW6k4tdVgZW
-To2m+jv+sqA5pvvpdVdJfxQ639gnscnsaxVJHC/XAoGBAIx5chZZesECe7ij+2c5
-3sPM8ZcNzxUmOF2mZ3yLy+x42suairfXlAQpLTAnjW+Nx3QslC4eV89kjU/a5iyc
-fAiwWSQGk972CY9h0CwO4ykj3oOyYi6ZfrkRaDf6A9QD5EMUBP4oPePEJbCmDIsJ
-VITYrHkjJsDULGIq4JX+zxdd
------END PRIVATE KEY-----
diff --git a/testdata/localhost.cert.pem b/testdata/localhost.cert.pem
new file mode 100644
index 0000000..4321f0f
--- /dev/null
+++ b/testdata/localhost.cert.pem
@@ -0,0 +1,34 @@
+-----BEGIN CERTIFICATE-----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+K1NCGLrJzU81eBNFf4AGWAdUG3YyvXMat6WGZbAtFZ//
+-----END CERTIFICATE-----
diff --git a/testdata/localhost.key.pem b/testdata/localhost.key.pem
new file mode 100644
index 0000000..e609b56
--- /dev/null
+++ b/testdata/localhost.key.pem
@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
+MIIEowIBAAKCAQEAusynRTMarGqKB1T8RVSy8JGzw9h0AtuiQuUOtk5YD6XUxKRF
+ndRwnnP1KsP6JleX8hE+SLRUn0uM+Neo+M+EyQ8Kn2QMkE6Fn04no/y/n94xtSDJ
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+gBJrIOtcJyBcrmbHGmYsZdx+MzaC/HWSwUE1s43MDzDJiP+OAgfv
+-----END RSA PRIVATE KEY-----