Switch to using dpkg-query since failed_when: False also always sets the

rc code to 0

tasks/elasticsearch-Debian.yml

@@ -26,15 +26,15 @@
   when: es_use_repository
 
 - name: Check if the elasticsearch package is installed
-  command: dpkg -l elasticsearch
+  command: dpkg-query --show --showformat='${db:Status-Status}' 'elasticsearch'
   register: elasticsearch_package
   failed_when: False
   changed_when: False
 
 - name: Gracefully stop and remove elasticsearch if we are switching to the oss version
   when:
     - es_package_name == 'elasticsearch-oss'
-    - elasticsearch_package.rc == 0
+    - elasticsearch_package.stdout == 'installed'
   block:
   - name: stop elasticsearch
     become: yes