CodeGen from PR 14716 in Azure/azure-rest-api-specs

[Hub Generated] Review request for Microsoft.Insights to add version stable/2018-01-01 (Azure#14716)

* Update metrics_API.json

Fix lint errors, adopt the standard error response object, fix inconsistencies between swagger and real service flagged by S360

* Update GetMetricDefinitions.json

Add error case to example

* Update metricDefinitions_API.json

Fix lint errors

* Update readme.md

Add lint suppression for errors in the common types file

* Update metrics_API.json

Update swagger to reflect what is actually being returned by the service as flagged by S360

* Create GetMetricError.json

Add example of partial error case

* Create GetMetricDefinitionsMetricClass.json

Add example for metric definitions for metricClass

* Update metricDefinitions_API.json

Add metricClass field

* Update metricDefinitions_API.json

Switch back to the same error response format used by the rest of Azure Monitor

* Update metrics_API.json

Switch back to the same error response format used by the rest of Azure Monitor

* Update readme.md

Update suppressions

* Update baseline_API.json

Add type object to LocalizableString to match the LocalizableString in metrics

* Update baseline_API.json

Reverting change to baseline API, there are a number of other problems with this swagger that I can't fix.

* Update readme.md

Add suppression for MissingTypeObject on LocalizableString due to collision

* Update metricDefinitions_API.json

Removing the explicit type specification from LocalizableString so it continues to match other APIs

* Update metrics_API.json

Removing the explicit type specification from LocalizableString so it continues to match other APIs

* Update GetMetricDefinitionsMetricClass.json

Fix formatting problems