teuthology-openstack: strip out unicode tags for interim test repo yaml

When json file loads from file for --test-repo it is converted
to u'' instead of bare str. Later yaml.dump includes unicode
tags in resulting yaml which makes teuthology-suite fail and
throw an exception.

Signed-off-by: Kyr Shatskyy <kyrylo.shatskyy@gmail.com>

diff --git a/teuthology/openstack/__init__.py b/teuthology/openstack/__init__.py
index 0f4abca63712e49315e4966b79e86d2a4a5e350e..dbe237a4624ead11489ff61c33c6a179e69aabe0 100644 (file)
--- a/teuthology/openstack/__init__.py
+++ b/teuthology/openstack/__init__.py
@@ -692,7 +692,7 @@ class TeuthologyOpenStack(OpenStack):
                     }
                 }
             }
-            yaml_data = yaml.dump(overrides, default_flow_style=False)
+            yaml_data = yaml.safe_dump(overrides, default_flow_style=False)
             with tempfile.NamedTemporaryFile(mode='w+b',
                                              suffix='-artifact.yaml',
                                              delete=False) as f: