orchestrator: Use prefix for config substitutions

This will avoid possible conflicts. The names for parts are chosen by
users, and if we decide to add more options in the future, this can
become handy.

JIRA: COMPOSE-3285
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>

pungi_utils/orchestrator.py

@@ -106,7 +106,9 @@ class ComposePart(object):
             self.status = Status.READY
 
     def setup_start(self, global_config, parts):
-        substitutions = dict((name, p.path) for name, p in parts.items() if p.is_finished())
+        substitutions = dict(
+            ("part-%s" % name, p.path) for name, p in parts.items() if p.is_finished()
+        )
         substitutions["configdir"] = global_config.config_dir
 
         config = kobo.conf.PyConfigParser()

tests/test_orchestrator.py

@@ -184,7 +184,7 @@ class TestComposePart(PungiTestCase):
         self.assertEqual(part.log_file, pth("tgt", "logs", "test.log"))
         self.assertEqual(
             ficf.call_args_list,
-            [mock.call("foo.conf", {"base": "/base", "configdir": pth("cfg")})],
+            [mock.call("foo.conf", {"part-base": "/base", "configdir": pth("cfg")})],
         )
         self.assertEqual(
             gcd.call_args_list,