Require flickrapi 1.4.5 for Python 2

flickrapi 1.4.4 installs a logger, which breaks script tests.
flickrapi 1.4.5 and flickrapi 2.x do not have this problem.
Require at least 1.4.5 to avoid this problem, and allow users
to remain on a stable version with less dependencies.

This issue is not relevant to Python 3, as only flickrapi 2.x
will work on Python 3, and setuptools automatically selects it.

Bug: 71454
Change-Id: I58b732a3dae69797fe9bc27067a666c091be2e93
Merge "Require flickrapi 1.4.5 for Python 2"