closes #1584

this log format is likely soon going to be removed from a future
influxdb release, so we should not be recommending that users base any
of their log parsing infra on this.

telegraf can't be cross-compiled for darwin, it has C dependencies and
thus many of the system plugins won't work.

they are:
  -configdirectory
  -outputfilter
  -filter

* Ping for windows

* En ping output

* Code format

* Code review

* Default timeout

* Fix problem with std error when no data received ( exit status = 1 )

Results in adding the io_time metric to FreeBSD, and adjusts the read_time and write_time metrics to be in milliseconds like linux.

closes #1356

Like cpu plugin, add two option "total" and "perdevice" to send network
and diskio metrics either per device and/or the sum of all devices.

1. in prometheus client, do not check for invalid characters anymore,
because we are already replacing all invalid characters with regex
anyways.
2. in win_perf_counters, sanitize field name _and_ measurement name.
Also add '%' to the list of sanitized characters, because this character
is invalid for most output plugins, and can also easily cause string
formatting issues throughout the stack.
3. All '%' will now be translated to 'Percent'

closes #1430

fixes #1481

closes #1413

closes #1477

closes #1439
closes #1440
closes #1441
closes #1442
closes #1443
closes #1444
closes #1445

closes #1499
closes #1019

Do no try to guess HAproxy stats url, just add ";csv" at the end of the
url if not present.

Signed-off-by: tgermain <timothee.germain@corp.ovh.com>

* add initial support to allow self-signed certs

When using self-signed the metrics collection will fail, this will allow
the user to specify in the input configuration file if they want to skip
certificate verification. This is functionally identical to `curl -k`

At some point this functionality should be moved to the agent as it is
already implemented identically in several different input plugins.

* Add initial comment strings to remove noise

These should be properly fleshed out at some point to ensure
code completeness

* refactor to use generic helper function

* fix import statement against fork

* update changelog

this may address, or at least log issue #1462

closes #1436

This also fixes the bad behavior of waiting until runtime to return log
parsing pattern compile errors when a pattern was simply unfound.

closes #1418

Also protect against user error when the telegraf user does not have
permission to open the provided file. We will now error and exit in this
case, rather than silently waiting to get permission to open it.

closes #1479

* Add mandrill webhook.

* Store the id of the msg as part of event.

Signed-off-by: Cyril Duez <cyril@stormz.me>
Signed-off-by: François de Metz <francois@stormz.me>

* Decode body to get the mandrill_events.

Signed-off-by: Cyril Duez <cyril@stormz.me>
Signed-off-by: François de Metz <francois@stormz.me>

* Handle HEAD request.

Signed-off-by: Cyril Duez <cyril@stormz.me>
Signed-off-by: François de Metz <francois@stormz.me>

* Add the README.

Signed-off-by: Cyril Duez <cyril@stormz.me>
Signed-off-by: François de Metz <francois@stormz.me>

* Add mandrill_webhooks to the README.

Signed-off-by: Cyril Duez <cyril@stormz.me>
Signed-off-by: François de Metz <francois@stormz.me>

* Update changelog.

Signed-off-by: Cyril Duez <cyril@stormz.me>
Signed-off-by: François de Metz <francois@stormz.me>

* Run gofmt.

Signed-off-by: Cyril Duez <cyril@stormz.me>
Signed-off-by: François de Metz <francois@stormz.me>

closes #1434

If Gather is run concurently the shared WaitGroup variable never finishes.

closes #1463
closes #1464

* add ability to read redis from a socket

* update CHANGELOG

closes #1474