this was previously used to log the aggregation performance (points/time).
this logging doesn't exist anymore since we moved to bulk saving so
remove it.

seems long_description needs to render cleanly to upload to pypi:
https://github.com/pypa/warehouse/issues/5890

related: #1025

infinity and nan are not part of json standard. the default python
json serialiser will dump `inf` and `nan` (unquoted) and load the
them.

we've historically returned `nan` and supported ignoring it by specifying
`fill=dropna`.

i don't believe `"inf"` or `"nan"` is significantly better and since
i don't want to break existing behaviour of nan, i think it's best
to just treat infinity as we do nan for now. anything more opinionated
probably requires more discussion.

related: #1023

Reduce the number of required reviewers

fix gendoc

With the low activity going on, it might be hard to get two reviews.

gendoc throws: `AttributeError: 'Sphinx' object has no attribute 'info'`

use logging provided by sphinx.util (not sure why it's using sphinx logger
but meh)

The Ceph relation adapter and keyring helper code was moved to
``charms.openstack`` as part of development of the
``ceph-rbd-mirror`` charm.

Port the Gnocchi charm to re-use this code.

Depends-On: If1d645f4708e27b724f93cac0e14431137c885d7
Depends-On: I97b4c30dabfcf65ec3fb876c2a09a44172be85e7
Change-Id: If0da7f1efcfa6b61aa210edcd76e9c3392e0e8e9

This commit was bulk generated and pushed by the OpenDev sysadmins
as a part of the Git hosting and code review systems migration
detailed in these mailing list posts:

http://lists.openstack.org/pipermail/openstack-discuss/2019-March/003603.html
http://lists.openstack.org/pipermail/openstack-discuss/2019-April/004920.html

Attempts have been made to correct repository namespaces and
hostnames based on simple pattern matching, but it's possible some
were updated incorrectly or missed entirely. Please reach out to us
via the contact information listed at https://opendev.org/ with any
questions you may have.

Change-Id: I954e0653f3f8d0c59ae87ef6efebee8409389923

Update latest release to ship with a version 4 to stein, ensuring
that charm does not try to keep upgrading gnocchi.

Change-Id: Icbd47cd8efaf10403a8bd9b32c35cf5169c4d886

0.19.13 supports use of Ubuntu Disco.

Change-Id: I2ce5ddf73a87234be18f79f3dbe855499bb26bf6

Ensure that EOL releases are removed from metadata
and tests, and that the current dev release is enabled
in metadata.  Dev release tests are enabled separately
because of chickens and eggs.

Change-Id: Idd527f75de70e43006ed6145b3599361e055e4c1

As a part of the Stein release, we need to ensure
that charmhelpers is up to date.

Change-Id: I85b116dc5b4128a739af7a527daffe2f1f9c527a

Change-Id: I07e181e8db5cd617ae97d42f6552a73f03c7bbe0
Closes-Bug: #1821314

A system upgrade broke ostestr. We can fix it by just calling stestr
directly.

Change-Id: Iefa4a23d02aca71b6b1aba6c4369a11c054e92fa

This technique was borrowed from the tox "cover" environment in
openstack/nova's tox.ini.  This leverages the fact that stestr lets
you override the python executable via the PYTHON environment
variable.  Doing this allows us to easily generate coverage for our
unit tests.

An important caveat is that this does not provide any coverage for
tests via zaza, amulet, etc.  It is purely focused on the unit tests.

Note that this replaces the previous .coveragerc; coverage
configuration is instead pulled from tox.ini.

Change-Id: I46e3cfc0bb5a7853325b5d9351190d3687080318

Change-Id: Ia48b0c9687c721e38308b52dddea841799d777f3
Closes-Bug: #1818077

don't fail everything if one group missing metric

Old aggregate API was allowing rate:XXX format for rateofchange
aggregation.

This change restores it since we use the new internal API.

Closes: #1016

The ceilometer-upgrade action is required for all gnocchi tests because
the ceilometer-upgrade action is required whenever gnocchi is related to
ceilomter.

Change-Id: I95b5368e969bfbafceef2594625810f13c590a82

it's possible that not all groups will contain a specific metric.
rather than fail, return the groups that do have the matching metric.
only if all groups don't have matching metrics, should we fail.

Fixes: #1013

Change-Id: Iecd65ae70b7a2672306a33801836f365a8dfc6d1
Closes-Bug: #1813982

Run ceilometer upgrade action in functional tests.

Switch to using proposed packages pending LP: #1813582

Closes-Bug: #1813982
Related-Bug: #1813582
Change-Id: Ie4bce16994fee7a3c4a546e0d7450dd44e92373d

Change-Id: I997d09eeafaba9ffc4af97b243b8e1e62d1e7d8f

We should increase concurrency using processes rather than threads
for the Gnocchi WSGI application, avoiding high memory consumption
over time under load.

Change-Id: I3d92c6997ec2129ab6ad161caac941f19cd6fbfe
Closes-Bug: 1806008

Rebuild charm to pickup latest changes to charms.openstack to
resolve issues with haproxy being restarted due to random
dict iteration.

Change-Id: I276aa16bf0b64c3d72a60e11f527e9c8639f4a63
Closes-Bug: 1800980