Overhaul reuse structure from role to task orientation

The overall config this will end up with is going to be nowhere
near complicated enough to require the segmented structure of roles.
A single directory of reusable tasks and resources will be much better

tasks/packages/install.yml

@@ -0,0 +1,21 @@
+# NOTE: This is currently horrifically broken. See the ongoing drama around
+# systemd-networkd on cent8. Basically triggering an update- or an install- will give
+# a conflict error due to the spicy-jankaroni-with-extra-cheese edition of
+# systemd-networkd I'm running. We can exclude "systemd*", but we need to install
+# systemd-devel so then we get a package not found error. Its a truly stupid problem
+# that will hopefully all go away when this bug gets fixed and systemd-networkd becomes
+# available in EPEL:
+# https://bugzilla.redhat.com/show_bug.cgi?id=1789146
+- name: Install packages on CentOS 8
+  become: true
+  when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "8"
+  dnf:
+    state: "{{ _runtime_update_state }}"
+    name: "{{ omni_packages_global + omni_packages_centos_8 }}"
+
+- name: Install packages on CentOS 7
+  become: true
+  when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "7"
+  yum:
+    state: "{{ _runtime_update_state }}"
+    name: "{{ omni_packages_global + omni_packages_centos_7 }}"