JSON/YAML conversion unable to parse integer-only keys

[Kent Wang]

I noticed this while working on a related bug: https://bugs.launchpad.net/heat/+bug/1286380

That if we call simple_parse or parse (like what the unit tests do) from heat.common.template_format.py, if we pass in a template file with like:

"F17": {
 "32": "F17-i386-cfntools",
 "64": "F17-x86_64-cfntools"
},

when the parser reaches key "32", it throws an exception. However when I change the key to "F32", everything works fine. Looks like the convert_json_to_yaml function only worked all this time because it appended an '__order__' string to every key before the parsing.

Maybe we should append something as well to fix simple_parse and parse

[Kent Wang (k.wang)]

Fix here: https://review.openstack.org/#/c/191311/2