samples: fix test case status code check

If a driver returns NotImplemented, the status code won't be 404 but the
test should not fail. Use the status argument in get_json for that check.

Change-Id: I71f21589d3a9fa917746e5eecb20f0e883cab830
Improve help strings

Follow oslo.config style guide for help strings better to create
consistent help strings:
* Capitalize first word of each help string
* Finish help strings with "."
* Improve wording

Change-Id: I4723ad672c30146869254695ba82678b082efd91
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: Ia3074e5fdcb8a0494d908944ea7d10942b08ab90
Closes-Bug: #1277495
fix column name and alignment

3rd column of measurements table should be Unit.
And alignment should be left.

Change-Id: Ic7e7e7264bb7b4dfe7949f781d23dcba7db71604
Implements complex query functionality for samples

New API resource /query/samples has been added

Implements: blueprint complex-filter-expressions-in-api-queries
Change-Id: I5b324f390eb3ed63514260683c1576a0fc0cb7af
Test case for creating an alarm without auth headers

This bug seems to have been fixed in the meantime. This is just a test
case proving it.

Closes-Bug: #1242617

Change-Id: I990ffc8b20b8bc09a8b85cf5aa3e4f17a416d93c
Merge "fix column name and alignment"
Merge "Test case for creating an alarm without auth headers"
Merge "Remove tox locale overrides"
Merge "samples: fix test case status code check"
Merge "Improve help strings"
Merge "Implements complex query functionality for samples"