Ignoring Umbraco ping.aspx from Application Insights
Application Performance Monitors provide you with a lot of data, but some of that data may not be relevant. Specifically, in Umbraco there is a page at \umbraco\ping.aspx that is being called frequently to keep the site alive. This is very useful to prevent the site from "dying" (?), but the data for this request isn't that relevant and could skew your statistics. Using Application Insights ITelemetryProcessor, we can prevent ping request from being sent to Azure Application Insights.