Merge pull request #2609 from edx/ormsbee/enable_browser_attr_insights2

Enable other possible attribute to forward New Relic browser attributes.

playbooks/roles/newrelic/templates/etc/newrelic/nrsysmond.cfg.j2

@@ -237,3 +237,6 @@ labels={{ labels }}
 # https://docs.newrelic.com/docs/agents/python-agent/installation-configuration/python-agent-configuration#browser-settings
 #
 browser_monitoring.attributes.enabled = true
+
+# https://docs.newrelic.com/docs/insights/new-relic-insights/decorating-events/insights-custom-attributes#forwarding-attributes
+browser_monitoring.capture_attributes = true