tests: do not generate dhparam for tests

Tests will run much quicker if we don't need to regenerate this file. Note that this file _should not_ be used within installs.

tests/ci/setup.sh

@@ -9,6 +9,12 @@ setup_circle() {
   # need to add the dokku user to the docker group
   sudo usermod -G docker dokku
   [[ "$1" == "buildstack" ]] && BUILD_STACK=true make -e stack
+
+  sudo add-apt-repository -y ppa:nginx/stable
+  sudo apt-get update
+  sudo apt-get -qq -y install nginx
+  sudo cp tests/dhparam.pem /etc/nginx/dhparam.pem
+
   sudo -E CI=true make -e install
   sudo -E make -e setup-deploy-tests
   bash --version

tests/dhparam.pem

@@ -0,0 +1,8 @@
+-----BEGIN DH PARAMETERS-----
+MIIBCAKCAQEA50NOKSshXcM7Gd7krFcQ8SdAdrfaBVtoUPRTLbjTD/v36cuUMiXI
+oJRa/CoZsg59iAHjkFG+LLyZnhOiUxNC/c6T6lOcdXR0an3YZEmFibfdQcoFAkiv
+3xEz1rI5YALke46GTyg65EsRiaSV/auk2epo/FkYRBriOLS9I3UGAsTcnTLajCUg
+YRc5jlRL6oZQ5Iy8Q+EhZkUOPoet/Qq6kamKFEiQIyaElgp5nkTOjJpLj9NsAynl
+nAIo1NUzq/IHsomgcrn3Chx3CKjGviMe9EBaWAww0glqnQluyLZYbsT+DZeUB7tB
+4sgK7KsiISIoP+H1NlDCxIHVvPZfMom/IwIBAg==
+-----END DH PARAMETERS-----