Initial work on using externally defined roles

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

@@ -10,61 +10,6 @@
   with_items:
     - "{{ matrix_base_data_path }}"
 
-- name: Preserve vars.yml on the server for easily restoring if it gets lost later on
-  ansible.builtin.copy:
-    src: "{{ matrix_vars_yml_snapshotting_src }}"
-    dest: "{{ matrix_base_data_path }}/vars.yml"
-    owner: "{{ matrix_user_username }}"
-    group: "{{ matrix_user_groupname }}"
-    mode: '0660'
-  when: "matrix_vars_yml_snapshotting_enabled | bool"
-
-- name: Save current git-repo status on the target to aid with restoring in case of problems
-  when: "matrix_playbook_commit_hash_preservation_enabled|bool"
-  block:
-    - name: Get local git hash  # noqa command-instead-of-module
-      delegate_to: 127.0.0.1
-      become: false
-      register: git_describe
-      changed_when: false
-      ansible.builtin.shell:
-        git describe
-            --always
-            --tags
-            --dirty
-            --long
-            --all
-
-    - ansible.builtin.set_fact:
-        git_hash: "{{ git_describe.stdout }}"
-
-    - name: Git hash
-      ansible.builtin.debug:
-        msg: "Git hash: {{ git_hash }}"
-
-    - name: Save git_hash.yml on target
-      ansible.builtin.copy:
-        content: "{{ git_hash }}"
-        dest: "{{ matrix_base_data_path }}/git_hash.yml"
-        owner: "{{ matrix_user_username }}"
-        group: "{{ matrix_user_groupname }}"
-        mode: '0660'
-
-  rescue:
-    - name: GIT not found error
-      ansible.builtin.debug:
-        msg: >-
-          Couldn't find GIT on the local machine. Continuing without saving the GIT hash.
-          You can disable saving the GIT hash by setting 'matrix_playbook_commit_hash_preservation_enabled: false' in vars.yml
-      when: "git_describe.stderr.find('git: not found') != -1"
-
-    - name: Get GIT hash error
-      ansible.builtin.fail:
-        msg: >-
-          Error when trying to get the GIT hash. Please consult the error message above.
-          You can disable saving the GIT hash by setting 'matrix_playbook_commit_hash_preservation_enabled: false' in vars.yml
-      when: "git_describe.stderr.find('git: not found') == -1"
-
 - name: Ensure Matrix network is created in Docker
   community.docker.docker_network:
     name: "{{ matrix_docker_network }}"