Added GCP example vars.

examples/gcp/terraform.tfvars

@@ -0,0 +1,16 @@
+project_id            = "vpn-router-poc"
+region                = "europe-central2"
+zone                  = "europe-central2-a"
+name                  = "vpn-router-example"
+admin_ssh_public_key  = "ssh-ed25519 AAAA... you@example.com"
+
+local_fqdn   = "router.example.com"
+local_cidrs  = "10.0.3.0/24"
+
+remote_addrs  = "peer.example.net"
+remote_id     = "peer.example.net"
+remote_cidrs  = "192.168.0.0/24"
+
+p2s_enabled       = false
+wireguard_enabled = false
+deploy_workload_vm = false