This change adds database support to the python-openstackclient
through a plugin and tests.

The support can be demonstrated through the implementation of
the trove command flavor-list which is now:
    openstack database flavor list

Use the -v or --debug flag to see the calls being made to the correct
flavor list function.

ubuntu@ubuntu:~$ openstack database flavor list -v
START with options: [u'database', u'flavor', u'list', u'-v']
command: database flavor list -> troveclient.osc.v1.flavors.ListFlavors
Using auth plugin: password
+-----+-----------+-------+-------+------+-----------+
|  id | name      |   RAM | vCPUs | Disk | ephemeral |
+-----+-----------+-------+-------+------+-----------+
|   1 | m1.tiny   |   512 |     1 |    1 |         0 |
|   2 | m1.small  |  2048 |     1 |   20 |         0 |
|   3 | m1.medium |  4096 |     2 |   40 |         0 |
|   4 | m1.large  |  8192 |     4 |   80 |         0 |
|  42 | m1.nano   |    64 |     1 |    0 |         0 |
| 451 | m1.heat   |   512 |     1 |    0 |         0 |
|   5 | m1.xlarge | 16384 |     8 |  160 |         0 |
|  84 | m1.micro  |   128 |     1 |    0 |         0 |
|  c1 | cirros256 |   256 |     1 |    0 |         0 |
|  d1 | ds512M    |   512 |     1 |    5 |         0 |
|  d2 | ds1G      |  1024 |     1 |   10 |         0 |
|  d3 | ds2G      |  2048 |     2 |   10 |         0 |
|  d4 | ds4G      |  4096 |     4 |   20 |         0 |
+-----+-----------+-------+-------+------+-----------+
END return value: 0

Change-Id: I308a6c6f3f5ce7dbb814ec0fd8ecb1734a2f137f
Partially-Implements: trove-support-in-python-openstackclient

To facilitate the concept of live-update, a new command
'reapply' has been added to reapply a given module
to all instances that it had previously been applied to.

Originally, a module designated live-update would automatically
be re-applied whenever it was updated.  Adding a specific
command however, allows operators/users more control over
how the new payload would be distributed.  Old 'modules'
could be left if desired, or updated with the new command.

Change-Id: Ic4cc9e9085cb40f1afbec05caeb04886137027a4
Partial-Bug: #1554903
Depends-On: I4caf4a57226dd711575cde766076fa25d16792e2

Added a --count_only flag to the call for module instances
to return a summary of the applied instances
based on the MD5 of the module (this is most useful
for live_update modules, to see which ones haven't been
updated).

Added a new module-instance-count command.  This was done
to facilitate getting the summary, since it returns
a different result set.  It basically calls the
same python interface as module-instances, but adds
the --count_only flag.

Also added some missing tests.

Change-Id: Iea661166bf3a4f3520a590da5954aedcd0036243
Partial-Bug: #1554900
Depends-On: I4caf4a57226dd711575cde766076fa25d16792e2

Now liberty is end of life,so we can get rid of slave_of

Change-Id: I429a95018a58a92576c52e0a9bc6b1b817c408ea

Under a keystone V3 scenario, the CLI command for
module-list will fail as it tried to determine whether
to display the 'visible' and 'tenant' fields (which only
make sense to show to an admin).

Keystone V3 stores the role information (used to find
out if the user has admin access) in a different
place than V2.  This fix uses a keystoneauth1 property
to have the value determined correctly internally,
so trove doesn't have to worry about it.

The logic was also moved to the utils module to
faciliate reuse.

Closes-Bug: #1622019
Change-Id: I6dbc3660b507017f85d06bde2903f4d2334fea35

Updates the swift authentication handling in v1/instances:_get_swift_client
to set auth_version as appropriate.

Change-Id: I39a22eeb4a9c371f333f81a69d4d429805b935f9
Fixes-bug: 1651502