Use localisation

Change-Id: I1d0917f3a7df7a8bde02a1c91a4e84bb066060b7
Remove .pyc files before generating sample conf!

Updates the generate_samples.sh script so that we remove
.pyc files in the nova source tree before generating the sample file.

If you don't run unit tests the .pyc files won't get regenerated.
This can cause cryptic errors if you run tests, switch branches,
and then try to regenerate your config files if there are module
differences, etc.

Change-Id: I784a22c1cd7fb2c69ea1d9e02f87bd7da19d76aa
Skip bad versions of iso8601

0.1.7 is now released (https://pypi.python.org/pypi/iso8601). We
do need to allow folks to use the old 0.1.4 or the new  0.1.7 and
avoid the two bad versions (0.1.5 and 0.1.6)

Closes-Bug: 1241460

Change-Id: I96bfd8f27d9f7327c4c353c5f57660aabaa8c735
Merge "Remove .pyc files before generating sample conf!"
Merge "Use localisation"