Reference Ansible facts via `ansible_facts` variable, not globally

This should bring better compatibility with future Ansible versions,
one of which will some day drop support for accessing facts via the global namespace.

Ref: https://github.com/geerlingguy/ansible-role-docker/pull/513

roles/custom/matrix-base/defaults/main.yml

@@ -161,7 +161,7 @@ matrix_federation_traefik_entrypoint_tls: true
 # Recognized values by us are 'amd64', 'arm32' and 'arm64'.
 # Not all architectures support all services, so your experience (on non-amd64) may vary.
 # See docs/alternative-architectures.md
-matrix_architecture: "{{ 'amd64' if ansible_architecture == 'x86_64' else ('arm64' if ansible_architecture == 'aarch64' else ('arm32' if ansible_architecture.startswith('armv') else '')) }}"
+matrix_architecture: "{{ 'amd64' if ansible_facts.architecture == 'x86_64' else ('arm64' if ansible_facts.architecture == 'aarch64' else ('arm32' if ansible_facts.architecture.startswith('armv') else '')) }}"
 
 # The architecture for Debian packages.
 # See: https://wiki.debian.org/SupportedArchitectures

roles/custom/matrix-base/tasks/ensure_fuse_installed.yml

@@ -6,11 +6,11 @@
 
 # This is for both RedHat 7 and 8
 - ansible.builtin.include_tasks: "{{ role_path }}/tasks/ensure_fuse_installed_redhat.yml"
-  when: ansible_os_family == 'RedHat'
+  when: ansible_facts.os_family == 'RedHat'
 
 # This is for both Debian and Raspbian
 - ansible.builtin.include_tasks: "{{ role_path }}/tasks/ensure_fuse_installed_debian.yml"
-  when: ansible_os_family == 'Debian'
+  when: ansible_facts.os_family == 'Debian'
 
 - ansible.builtin.include_tasks: "{{ role_path }}/tasks/ensure_fuse_installed_archlinux.yml"
-  when: ansible_os_family == 'Archlinux'
+  when: ansible_facts.os_family == 'Archlinux'

roles/custom/matrix-base/tasks/validate_config.yml

@@ -64,7 +64,7 @@
 
 - name: Fail if matrix_architecture is set incorrectly
   ansible.builtin.fail:
-    msg: "Detected that variable matrix_architecture {{ matrix_architecture }} appears to be set incorrectly. See docs/alternative-architectures.md. Server appears to be {{ ansible_architecture }}."
+    msg: "Detected that variable matrix_architecture {{ matrix_architecture }} appears to be set incorrectly. See docs/alternative-architectures.md. Server appears to be {{ ansible_facts.architecture }}."
   when: matrix_architecture not in ['amd64', 'arm32', 'arm64']
 
 - name: Fail if matrix_playbook_reverse_proxy_type is set incorrectly

roles/custom/matrix_playbook_migration/tasks/main.yml

@@ -10,7 +10,7 @@
   block:
     - ansible.builtin.include_tasks: "{{ role_path }}/tasks/validate_config.yml"
 
-- when: ansible_os_family == 'Debian' and matrix_playbook_docker_installation_enabled | bool and matrix_playbook_migration_debian_signedby_migration_enabled | bool
+- when: ansible_facts.os_family == 'Debian' and matrix_playbook_docker_installation_enabled | bool and matrix_playbook_migration_debian_signedby_migration_enabled | bool
   tags:
     - setup-all
     - install-all
@@ -19,7 +19,7 @@
   block:
     - ansible.builtin.include_tasks: "{{ role_path }}/tasks/debian_docker_signedby_migration.yml"
 
-- when: ansible_os_family == 'Debian' and matrix_playbook_docker_installation_enabled | bool and matrix_playbook_migration_docker_trusted_gpg_d_migration_enabled | bool
+- when: ansible_facts.os_family == 'Debian' and matrix_playbook_docker_installation_enabled | bool and matrix_playbook_migration_docker_trusted_gpg_d_migration_enabled | bool
   tags:
     - setup-all
     - install-all