make the packages role more generic

tasks/RedHat/packer.yml

@@ -0,0 +1,8 @@
+---
+- name: ensure hashicorp repo is active
+  ansible.builtin.include_tasks:
+    file: packages/{{ ansible_os_family }}/hashicorp_repo.yml
+
+- name: append to pkgs
+  set_fact:
+    syspkgs: "{{ (syspkgs | default([])) + [ 'packer' ] }}"