Fixes: #11863
Backwards incompatible so will not be pushed to 0.8.x series. This
follows the datadog documentation as mentioned in the issue
```
% make testacc TEST=./builtin/providers/datadog TESTARGS='-run=TestAccDatadogMonitor_'
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/02/13 12:30:24 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/datadog -v -run=TestAccDatadogMonitor_ -timeout 120m
=== RUN TestAccDatadogMonitor_Basic
--- PASS: TestAccDatadogMonitor_Basic (84.23s)
=== RUN TestAccDatadogMonitor_BasicNoTreshold
--- PASS: TestAccDatadogMonitor_BasicNoTreshold (81.92s)
=== RUN TestAccDatadogMonitor_Updated
--- PASS: TestAccDatadogMonitor_Updated (82.91s)
=== RUN TestAccDatadogMonitor_TrimWhitespace
--- PASS: TestAccDatadogMonitor_TrimWhitespace (63.34s)
=== RUN TestAccDatadogMonitor_Basic_float_int
--- PASS: TestAccDatadogMonitor_Basic_float_int (75.84s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/datadog 388.257s
```
* provider/datadog 9869: Validate credentials when initialising client.
* provider/datadog Pull in new version of go-datadog-api.
* provider/datadog Update testAccCheckDatadogMonitorConfigNoThresholds test config.
* provider/datadog #9375: Refactor tags to a list instead of a map.
Tags are allowed to be but not restricted to, key value pairs (ie: foo:bar)
but are esssentially strings. This changes allows using, and mixing of tags with
form "foo" and "foo:bar". It also allows using duplicate keys like "foo:bar" and "foo:baz".
* provider/datadog update import test.
* Add import support
* Add import tests
* Fix tags/thresholds
* The type of the object is a float but the tests were using integers, so the
tests were also adjusted to match.
* Fix Float formatting
* Provide thresholds as map[string]string to deal with formatting issues
* Adjust tests to deal with loss of trailing zeros on floats
* provider/datadog Update go-datadog-api.
* provider/datadog Add support for "require_full_window" and "locked".
* provider/datadog Update tests, update doco, gofmt.
* provider/datadog Add options to update resource.
* provider/datadog "require_full_window" defaults to True, "locked" to False. Use
those initial values as the starting configuration.
* provider/datadog Update notify_audit tests to use the default value for
testAccCheckDatadogMonitorConfig and a custom value for
testAccCheckDatadogMonitorConfigUpdated.
This catches a situation where the code ignores setting the option on creation,
and the update function merely asserts the default value, versus actually changing
the value.