use .war suffix

Author: vladak

tools/src/test/python/test_deploy.py

@@ -33,7 +33,7 @@
 def test_deploy_dirs():
     logger = logging.getLogger(__name__)
 
-    with tempfile.NamedTemporaryFile() as source_war_fp, tempfile.TemporaryDirectory() as tmp_dir:
+    with tempfile.NamedTemporaryFile(suffix=".war") as source_war_fp, tempfile.TemporaryDirectory() as tmp_dir:
         source_war = source_war_fp.name
         assert os.path.isfile(source_war)
         target_war = os.path.join(tmp_dir, "foo", "bar", "my.war")