Add a script to get the next hop in a route.

I never remember the incantation, and its slightly different between FreeBSD and Linux so I am adding this script essentially as a note.

ansible/roles/network/tasks/linux.yaml

@@ -58,3 +58,14 @@
     - iwd.service
     # - systemd-networkd.service
     - systemd-resolved.service
+
+- name: Install scripts
+  copy:
+    src: "files/{{ item.src }}"
+    dest: "{{ item.dest }}"
+    mode: 0755
+    owner: root
+    group: wheel
+  loop:
+    - src: next_hop_linux.bash
+      dest: /usr/local/bin/next_hop