feat: gencert script to regenerate the test ssl certs

package.json

@@ -42,6 +42,7 @@
     "test": "mocha --require test/support/env --check-leaks --bail --no-exit --reporter spec test/",
     "test-ci": "nyc --reporter=lcov --reporter=text npm test",
     "test-cov": "nyc npm test",
-    "version": "node scripts/version-history.js && git add HISTORY.md"
+    "version": "node scripts/version-history.js && git add HISTORY.md",
+    "gencert": "./test/support/gencert.sh"
   }
 }

test/support/gencert.sh

@@ -0,0 +1,12 @@
+#! /bin/sh
+set -ex
+
+openssl genpkey -algorithm RSA -out new_server.key -pkeyopt rsa_keygen_bits:2048
+
+openssl x509 -in ./test/fixtures/server.crt -signkey new_server.key -days 3650 -out new_server.crt
+
+openssl x509 -in new_server.crt -text -noout
+
+mv new_server.crt ./test/fixtures/server.crt
+
+mv new_server.key ./test/fixtures/server.key