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/clean.yml

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+---
+# I'm honestly not sure why these 304 warnings are being raised by the linter here...
+- name: Clean DNF cache  # noqa: 304
+  when: ansible_distribution == "Fedora" or (ansible_distribution == "CentOS" and ansible_distribution_major_version == "8")
+  become: true
+  command:
+    cmd: /usr/bin/dnf clean all
+    warn: false
+  changed_when: true
+
+- name: Clean YUM cache  # noqa: 304
+  when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "7"
+  become: true
+  command:
+    cmd: /usr/bin/yum clean all
+    warn: false
+  changed_when: true

tasks/packages/install.yml

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+# 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 }}"

tasks/packages/repos.yml

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+---
+- name: Install repositories on CentOS 8
+  when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "8"
+  become: true
+  block:
+    - name: Enable Extra Packages for Enterprise Linux on CentOS 8
+      dnf:
+        state: present
+        name: https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
+
+    # The testing repo had to be enabled for a previous version of systemd-networkd
+    # to be installed
+    - name: Disable EPEL-Testing repository on CentOS 8
+      lineinfile:
+        path: /etc/yum.repos.d/epel-testing.repo
+        regexp: "enabled=(0|1)"
+        line: "enabled=0"
+        insertbefore: "^$"
+        firstmatch: true
+
+    - name: Enable the power tools repository on CentOS 8
+      lineinfile:
+        path: /etc/yum.repos.d/CentOS-PowerTools.repo
+        regexp: "enabled=(0|1)"
+        line: "enabled=1"
+
+- name: Enable Extra Packages for Enterprise Linux on CentOS 7
+  become: true
+  when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "7"
+  yum:
+    state: present
+    name: https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

tasks/packages/update.yml

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+---
+# Ansible Lint 403 ("Package installs should not use latest") is silenced here because
+# it would defeat the point otherwise
+- name: Upgrade Fedora and CentOS 8 packages  # noqa: 403
+  when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "8"
+  become: true
+  dnf:
+    state: latest
+    name: "*"
+    exclude: "{{ ','.join(omni_pkg_exclude | default(['kernel*', 'docker-ce'])) }}"
+
+- name: Upgrade CentOS 7 packages  # noqa: 403
+  when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "7"
+  become: true
+  yum:
+    state: latest
+    name: "*"
+    exclude: "{{ ','.join(omni_pkg_exclude | default(['kernel*', 'docker-ce'])) }}"
+
+- name: Upgrade Fedora packages  # noqa: 403
+  when: ansible_distribution == "Fedora"
+  become: true
+  dnf:
+    state: latest
+    name: "*"
+    exclude: "{{ ','.join(omni_pkg_exclude | default(['kernel*', 'docker-ce'])) }}"
+
+# Yeah I'll get here eventually
+# - name: Upgrade APT packages
+#   when: ansible_distribution == "Debian" or ansible_distribution == "Ubuntu"
+#   become: true
+#   apt: