Add dedpulication to command construct

Co-authored-by: Andrew Klychkov <[email protected]>

plugins/modules/mysql_db.py

@@ -437,10 +437,10 @@ def db_dump(module, host, user, password, db_name, target, all_databases, port,
     elif os.path.splitext(target)[-1] == '.xz':
         path = module.get_bin_path('xz', True)
 
-    if pipefail and path:
-        cmd = 'set -o pipefail && %s | %s > %s' % (cmd, path, shlex_quote(target))
-    elif path:
+    if path:
         cmd = '%s | %s > %s' % (cmd, path, shlex_quote(target))
+        if pipefail:
+            cmd = 'set -o pipefail && ' + cmd
     else:
         cmd += " > %s" % shlex_quote(target)