android, fix variable names, add idempotency to module changes.

tasks/workstation/linux/software/android.yml

@@ -37,9 +37,9 @@
 
 - name: Workstation | Linux | Software | Android | Facts [05]
   set_fact:
-    android_sdkmanager2_list: "{{ android_sdkmanager }} list"
-    android_sdkmanager2_install: "{{ android_sdkmanager }} install"
-    android_sdkmanager2_remove: "{{ android_sdkmanager }} remove"
+    android_sdkmanager2_list: "{{ android_sdkmanager2 }} list"
+    android_sdkmanager2_install: "{{ android_sdkmanager2 }} install"
+    android_sdkmanager2_remove: "{{ android_sdkmanager2 }} remove"
 
 # Regarding images to download; the `default` is the smallest, then `playstore`.
 # The `google_apis` images are significantly larger than the `playstore` option.
@@ -255,9 +255,12 @@
   shell: |
     if ! {{ android_sdkmanager2_list }} | grep -q '{{ item }}'; then
       yes | {{ android_sdkmanager2_install }} '{{ item }}'
+      echo "INSTALLED"
     fi
   loop: "{{ android_downloads_required }}"
   become_user: "{{ user }}"
+  register: check_required
+  changed_when: "'INSTALLED' in check_required.stdout"
   when: coding == true
 
 # Add more versions for testing across all the important platforms.
@@ -265,9 +268,12 @@
   shell: |
     if ! {{ android_sdkmanager2_list }} | grep -q '{{ item }}'; then
       yes | {{ android_sdkmanager2_install }} '{{ item }}'
+      echo "INSTALLED"
     fi
   loop: "{{ android_downloads_additional }}"
   become_user: "{{ user }}"
+  register: check_additional
+  changed_when: "'INSTALLED' in check_additional.stdout"
   when: coding == true
     and sdks == true