r modifications for Cloud Monitoring metrics.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th><th>Required</th></tr></thead><tbody><tr id=MetricsOverride-drop><td><code>drop</code></td><td><code>bool</code></td><td><p>Optional. If true, no data for the associated metric will be collected or
exported.</p></td><td>No</td></tr><tr id=MetricsOverride-tag_overrides><td><code>tag_overrides</code></td><td><code>map&lt;string,&nbsp;string></code></td><td><p>Optional. Maps ta