nova domain leaking into other domains

[Neela Shah]

Overriding the builtin namespace causes the nova domain to leak into other modules when looking up messages.

when nova calls something in glance and there is a message needed it overrides the '_' function used for the message lookup and redirects glance to look for the message in the nova message file and the message is not found.

To fix this problem, every file should be importing their own '_' function so that it only gets messages for its own 'domain'.

[Chuck Short (zulcss)]

Which version is this with?

[Neela Shah (neela)]

This is with grizzly.

[Mathew Odden (locke105)]

The issue isn't limited to just overriding the '_' function for glance client, but for any library that calls into. Also, the interference works both ways, the other libraries can replace the '_' function installed in the _builtin_ namespace which in turn causes issues when flow of control gets back to nova.

[Joe Gordon (jogo)]

each module now imports its own _