fix: gracefully handle command errors while checking for TSM systemd unitfile

tasks/uninstall_tsm_client.yml

@@ -7,6 +7,11 @@
           #command: systemctl list-unit-files | grep dsmcad
           command: systemctl list-unit-files dsmcad.service
           register: tsm_client_installed
+          failed_when:
+            - '"0 unit files listed." not in tsm_client_installed.stdout'
+            - '"1 unit files listed." not in tsm_client_installed.stdout'
+            - tsm_client_installed.rc >= 2
+          #ignore_errors: true
 #        - name: debug
 #          debug:
 #            msg: "tsm_client_installed: {{ tsm_client_installed }}"