-numerous changes to work with Raspbian 10

-redo of some roles, particularly GUI
-modifications to support working from a "Raspbian Lite" install

roles/pi/tasks/main.yaml

@@ -1,17 +1,27 @@
----
-- name: set swapfile
-  become: true
-  lineinfile:
-          path: /etc/dphys-swapfile
-          state: present
-          regexp: '^CONF_SWAPSIZE'
-          line: 'CONF_SWAPSIZE=1024'
-          owner: root
-          group: root
-          mode: 0600
-  tags: set_swapfile
-- name: restart swapfile
-  become: true
-  command: '/etc/init.d/dphys-swapfile restart'
-  tags: set_swapfile
-
+---
+- name: set swapfile
+  become: true
+  lineinfile:
+          path: /etc/dphys-swapfile
+          state: present
+          regexp: '^CONF_SWAPSIZE'
+          line: 'CONF_SWAPSIZE=1024'
+          owner: root
+          group: root
+          mode: 0600
+  tags: set_swapfile
+- name: restart swapfile
+  become: true
+  command: '/etc/init.d/dphys-swapfile restart'
+  tags: set_swapfile
+- lineinfile:
+    path: /boot/config.txt
+    state: present
+    backrefs: yes
+    regexp: "{{ item.regexp }}"
+    line: "{{ item.line }}"
+  with_items:
+    - { regexp: '#framebuffer_width=1280', line: 'framebuffer_width=1280' }
+    - { regexp: '#framebuffer_height=720', line: 'framebuffer_height=1024' }
+  become: true
+