MINOR: ssl: add the ssl_s_* sample fetches for server side certificate

This commit adds some sample fetches that were lacking on the server
side:

ssl_s_key_alg, ssl_s_notafter, ssl_s_notbefore, ssl_s_sig_alg,
ssl_s_i_dn, ssl_s_s_dn, ssl_s_serial, ssl_s_sha1, ssl_s_der,
ssl_s_version
diff --git a/reg-tests/ssl/ssl_server_samples.vtc b/reg-tests/ssl/ssl_server_samples.vtc
new file mode 100644
index 0000000..0ee2998
--- /dev/null
+++ b/reg-tests/ssl/ssl_server_samples.vtc
@@ -0,0 +1,73 @@
+#REGTEST_TYPE=devel
+
+varnishtest "Test the ssl_s_* sample fetches"
+#REQUIRE_VERSION=2.2
+#REQUIRE_OPTIONS=OPENSSL
+feature ignore_unknown_macro
+
+server s1 -repeat 3 {
+    rxreq
+    txresp
+} -start
+
+haproxy h1 -conf {
+    global
+        tune.ssl.default-dh-param 2048
+        tune.ssl.capture-cipherlist-size 1
+        crt-base ${testdir}
+        stats socket "${tmpdir}/h1/stats" level admin
+
+    defaults
+        mode http
+        option httplog
+        ${no-htx} option http-use-htx
+        log stderr local0 debug err
+        option logasap
+        timeout connect 1s
+        timeout client  1s
+        timeout server  1s
+
+
+    listen clear-lst
+        bind "fd@${clearlst}"
+        balance roundrobin
+        http-response add-header x-ssl-sha1 %[ssl_s_sha1,hex]
+        http-response add-header x-ssl-notafter %[ssl_s_notafter]
+        http-response add-header x-ssl-notbefore %[ssl_s_notbefore]
+        http-response add-header x-ssl-sig_alg %[ssl_s_sig_alg]
+        http-response add-header x-ssl-i_dn %[ssl_s_i_dn]
+        http-response add-header x-ssl-s_dn %[ssl_s_s_dn]
+        http-response add-header x-ssl-s_serial %[ssl_s_serial,hex]
+        http-response add-header x-ssl-key_alg %[ssl_s_key_alg]
+        http-response add-header x-ssl-der %[ssl_s_der,hex]
+        http-response add-header x-ssl-version %[ssl_s_version]
+
+        server s1 "${tmpdir}/ssl.sock" ssl verify none sni str(www.test1.com)
+
+    listen ssl-lst
+        mode http
+        ${no-htx} option http-use-htx
+
+        bind "${tmpdir}/ssl.sock" ssl strict-sni crt-list ${testdir}/localhost.crt-list
+
+        server s1 ${s1_addr}:${s1_port}
+} -start
+
+
+client c1 -connect ${h1_clearlst_sock} {
+    txreq
+    rxresp
+    expect resp.status == 200
+    expect resp.http.x-ssl-sha1 == "2195C9F0FD58470313013FC27C1B9CF9864BD1C6"
+    expect resp.http.x-ssl-notafter == "180116230238Z"
+    expect resp.http.x-ssl-notbefore == "160117230238Z"
+    expect resp.http.x-ssl-sig_alg == "RSA-SHA256"
+    expect resp.http.x-ssl-i_dn == "/C=FR/ST=Ile-de-France/L=Paris/O=ozon.io/CN=Ozon Test CA/emailAddress=support@ozon.io"
+    expect resp.http.x-ssl-s_dn  == "/C=FR/ST=Ile-de-France/L=Neuilly-sur-Seine/O=TOAD Consulting/OU=eParapher Team/CN=www.test1.com/emailAddress=arnault.michel@toad-consulting.fr"
+    expect resp.http.x-ssl-s_serial == "02"
+    expect resp.http.x-ssl-key_alg == "rsaEncryption"
+    expect resp.http.x-ssl-version == "3"
+    expect resp.http.x-ssl-der ~ 3082067930820461A0030201020201.*
+} -run
+
+