Discovery and Sense time

In our Agent, we have sensors, but they can be split out by the "discovery" and the actual sensor. 
The discovery cycle (every 20s) will check if any applicable process runs on the host, and if so activate a sensor instance for that process. Discovery and sensors both run on a single thread in the Agent each.

Discovery time is the time it takes for every discovery instance to report which matching processes it found.
Sense time is the time it takes to collect metrics and entity data from every sensor instance.

Each sensor is part of the normal release of Instana sensors and the agent will automatically download it. If the discovery phase figures out the sensor should be activated, then it starts one.

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