Check that nextcloud encryption gets enabled

src/freedombone-app-nextcloud

     ./occ status
     ./occ app:list
     ./occ app:enable encryption
+    ./occ encryption:enable
+    if [ ! "$?" = "0" ]; then
+        echo $'Encryption not enabled'
+        exit 73527
+    fi
     ./occ config:system:set appstoreenabled --value=false
     chmod g+w /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs/config/config.php
     chown -R www-data:www-data /var/www/${NEXTCLOUD_DOMAIN_NAME}/htdocs