Add resource attributes as metric labels

[psx95]

Feature Addition

• Adds user configurable option to attach service.name, service.namespace and service.id resource attributes to metric labels.
• This can be disabled by passing the provided NO_RESOURCE_ATTRIBUTES as the resource filter to the MetricConfiguration object.
• The default metric configuration has been changed to use the DEFAULT_RESOURCE_ATTRIBUTES_FILTER.

Note: This is similar to how the Google Cloud Monitoring go exporter works.

Testing

• When running the auto-instrumentation-example, service_name appears under metric labels on GCP console with the expected value.
• When running the metric export example, service_name appears with unknown_resource since the example does not include resource detection.

Deprecation

• Deprecates the current publicly available AggregateByLabelMetricTimeSeriesBuilder constructor in favor of one that also accepts a resource attribute filter in form of a predicate. The existing constructor uses the NO_RESOURCE_ATTRIBUTES to keep it in-line with the existing functionality.

fixes #313