terraform/jenkins-controller: add static builders

This adds builder.vedenemo.dev and hetzarm.vedenemo.dev as static
builders to /etc/nix/machines, as well as the keyscan machinery.

#171 already ensured that ssh
key works.

maxJobs is set to the number of cores the system sees, and speedFactor
is set to 3, making it more attractive than the other builders.

Signed-off-by: Florian Klink <flokli@flokli.de>

terraform/jenkins-controller.tf

@@ -63,15 +63,20 @@ module "jenkins_controller_vm" {
       {
         content = join("\n", concat(
           [for ip in toset(module.builder_vm[*].virtual_machine_ip_address) : "ssh://remote-build@${ip} x86_64-linux /etc/secrets/remote-build-ssh-key 10 1 kvm,nixos-test,benchmark,big-parallel - -"],
-          [for ip in toset(module.arm_builder_vm[*].virtual_machine_ip_address) : "ssh://remote-build@${ip} aarch64-linux /etc/secrets/remote-build-ssh-key 8 1 kvm,nixos-test,benchmark,big-parallel - -"]
+          [for ip in toset(module.arm_builder_vm[*].virtual_machine_ip_address) : "ssh://remote-build@${ip} aarch64-linux /etc/secrets/remote-build-ssh-key 8 1 kvm,nixos-test,benchmark,big-parallel - -"],
+          (var.envtype == "dev" || var.envtype == "priv") ? [
+            "ssh://remote-build@builder.vedenemo.dev x86_64-linux /etc/secrets/remote-build-ssh-key 64 3 kvm,nixos-test,benchmark,big-parallel - -",
+            "ssh://remote-build@hetzarm.vedenemo.dev aarch64-linux /etc/secrets/remote-build-ssh-key 80 3 kvm,nixos-test,benchmark,big-parallel - -"
+          ] : []
         )),
         "path" = "/etc/nix/machines"
       },
       # Render /var/lib/builder-keyscan/scanlist, so known_hosts can be populated.
       {
         content = join("\n", toset(concat(
           module.builder_vm[*].virtual_machine_ip_address,
-          module.arm_builder_vm[*].virtual_machine_ip_address
+          module.arm_builder_vm[*].virtual_machine_ip_address,
+          (var.envtype == "dev" || var.envtype == "priv") ? ["builder.vedenemo.dev", "hetzarm.vedenemo.dev"] : []
         ))),
         "path" = "/var/lib/builder-keyscan/scanlist"
       },