Increase test rate limit to avoid rate limit error

The current rate limit is 200 requests per minute. I'm getting
consistent tox failures as the machine is exceeding this rate. The fix
impacts only test code and adjusts the limit and a test that has a
hard-coded reference to the old limit. Why 500 you may ask? Because
600 worked and 450 failed consistently with the rate limit error.

In addition, the change addresses the fact that some test
configuration values are duplicated in the test; the change makes the
test reference the configuration value.

Change-Id: I4bb290d8de6253d65b7877c743bb288ee2bce536
Closes-Bug: #1376689
Closes-Bug: #1378932
Miscellaneous Cluster Fixes

addresses a few minor issues raised after clusters was merged.

Change-Id: I2395e3a65efd1a8b9ec494fd59a0e2ee2009f59a
Closes-Bug: #1365767
Logging audit for guestagent/redis

Adjust logging to conform to logging standards.
Cleaned up a few messages that were unclear and changed some
LOG.info messages to LOG.debug

Change-Id: I3570dddf0ba7c576b4cf9cb6affa55335fd23ac7
Partial-Bug: #1324206
Allow users the ability to update an instance name

Currently the users do not have the ability to rename an
instance. The current PUT call, does not allow the user
to modify individual attributes of the instance.
Hence this review introduces a new PATCH call for updating
instance name and/or configurations.
The long term plan is to deprecate PUT in favor of PATCH.

Implements: blueprint Allow users the ability to update the instance name
Author: Iccha Sethi <iccha.sethi@rackspace.com>
Co-Authored-By: Theron Voran <theron.voran@rackspace.com>
Co-Authored-By: Riddhi Shah <ridhi.j.shah@gmail.com>

Change-Id: I25c3b0906191afdc587f5ddd5777b3185dc080d4
Merge "Allow users the ability to update an instance name"
Merge "Logging audit for guestagent/redis"
Merge "Increase test rate limit to avoid rate limit error"
Merge "Miscellaneous Cluster Fixes"