Replace OpenStack LLC with OpenStack Foundation

Change-Id: I5203554989bc7244cff2899d52c5764360bba60c
Fixes-Bug: #1214176
Remove unecessary `get_boolean` function

`get_boolean` is entirely equivalent to `bool_from_string` so just use that
instead.

Change-Id: I3cdcea2db882d49f6b4208ea579cff6f898c29e2
Updated from global requirements

Change-Id: Ie9e92b06eb28fa238c7cb923a65345c415dd3642
Prefix `utils.get_root_helper` with underscore

This function is internal to `utils` so should be begin with an underscore to
clarify that it's private.

Change-Id: I6fdb0c7d46867347d74b79ec1ed5749ef597258a
Merge "Prefix `utils.get_root_helper` with underscore"
Merge "Remove unecessary `get_boolean` function"
Merge "Replace OpenStack LLC with OpenStack Foundation"
Merge "Updated from global requirements"
XenAPI: Add versioning for plugins

Because the plugins live on a host seperate to Nova we need an interface
to test whether they are the expected version.  We can't use pip or other
requirement systems as they are cross-machine.

Closes bug 1226622

Change-Id: I58ab669061f51bd87071e2cf0d93d33021001309
Avoid mutable default args in _test_populate_filter_props

Using [] as an argument means that any changes to that argument
will stick across multiple calls to the method.  In this case,
this is surprising behavior that may lead to confusion as we
reuse this method in more tests.  Instead, set it to None, which
is non-mutable, and later assign it to [] inside method scope.

Change-Id: I9cc07b8917ad096c5efea9282bae08c41d15f1cf
Merge "Avoid mutable default args in _test_populate_filter_props"