Escape newlines and " in metadata script.

Change-Id: If0c8667042fe9f630ac04f1ca5c7f390fdcbc94a
Reviewed-on: https://review.openstack.org/34058
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins

modules/jenkins/files/slave_scripts/pypi-extract-metadata.py

@@ -48,6 +48,8 @@ for key, value in meta_items.items():
     if not isinstance(value, list):
         value = [value]
     for v in value:
+        v = v.replace('\n', r'\n')
+        v = v.replace('"', r'\"')
         curl_config.write('form = "%s=%s"\n' % (key, v))
 
 curl_config.write('\n')