Fix Security Group Rule creation examples

Closes-Bug: #1277719

Change-Id: I2ed4193d4401da9014161e7b58d833a630a51fd8
Remove doc-test-exceptions.txt

This is handled now via doc-test.conf, we can remove the file
completely now.

Change-Id: Ie1de6adc9818d4d97f1d24feb86bc8c765a48ea7
Merge "Fix Security Group Rule creation examples"
Remove tox locale overrides

* tox.ini: The LANG, LANGUAGE and LC_ALL environment overrides were
introduced originally during the testr migration in an attempt to be
conservative about the possibility that locale settings in the
calling environment could cause consistency problems for test runs.
In actuality, this should be unnecessary and any place where it does
cause issues ought to be considered an actual bug. Also, having
these in the configuration actively causes older pip to have
problems with non-ASCII content in some package metadata files under
Python 3, so drop it now.

Change-Id: I009facdc0d5fe70f82f92a8b43959509434dcea1
Closes-Bug: #1277495
Merge "Remove tox locale overrides"