Add support to region Metric from CloudWatch Dashboard #5449
Description
The metric class is missing the region parameter. This is required for metrics around lambda@edge which are deployed in different locations.
The following is an example of the graph widget produced by the AWS console.
{
"view": "timeSeries",
"region": "eu-west-1",
"stacked": false,
"metrics": [
[ "AWS/Lambda", "Invocations", "FunctionName", "us-east-1.FunctionName", "Resource", "us-east-1.FunctionName:1", { "yAxis": "left", "period": 300, "stat": "Sum" } ],
[ "...", { "yAxis": "left", "period": 300, "stat": "Sum", "region": "eu-west-2" } ],
[ "...", { "yAxis": "left", "period": 300, "stat": "Sum", "region": "eu-central-1" } ]
],
"period": 300
}