Matt Riedemann 8252703f56 Unblock migrate (py26 and py3* testing issues) ...

There are two changes which have to go together to pass the gate
tests:

1. Update pbr and mock requirements from global-requirements

mock 1.2 supports py26 again so make that the minimum version. The
same change is being made in g-r with:

Ic6b9e18eaec9c81bbbbc57129e024904be928e09

Sync up with latest pbr in global-requirements while we're at it.

Closes-Bug: #1474925

2. Fix the importpath module to work with python >= 3.3 where the
__import__ built-in is raising an ImportError on a temporary file
that is added to the system path.

Closes-Bug: #1475339

Change-Id: Ie98938ba75f3983094dd540b7d26a7ec46be4f6e

2015-07-18 10:39:35 -07:00

886 B

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