tests: self-signed TLS certificates

tests/req.cnf

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+[req]
+distinguished_name = req_distinguished_name
+req_extensions = v3_req
+
+[req_distinguished_name]
+countryName = Country Name (2 letter code)
+countryName_default = CN
+stateOrProvinceName = State or Province Name (full name)
+stateOrProvinceName_default = BJ
+localityName = Locality Name (eg, city)
+localityName_default = Beijing
+organizationalUnitName  = Organizational Unit Name (eg, section)
+organizationalUnitName_default  = TUNA
+commonName = Common Name (server FQDN or domain name)
+commonName_default = localhost
+commonName_max  = 64
+
+[v3_req]
+# Extensions to add to a certificate request
+basicConstraints = CA:FALSE
+keyUsage = nonRepudiation, digitalSignature, keyEncipherment
+subjectAltName = @alt_names
+
+[alt_names]
+DNS.1 = localhost
+DNS.2 = manager.localhost