Make debounceTimeMillis configurable with @ConfigProperty

[dkwon17]

It would be great if debounceTimeMillis (which is the time frame that identical telemetry events within it, would be merged into one telemetry event) can be introduced into BaseConfiguration as a @ConfigProperty so that it can be configured via environment variables, application.properties etc.

To do this, the following could be added to BaseConfiguration:

  @ConfigProperty(name="debounce.timeout", defaultValue = "1500")
  protected long debounceTimeout;

then, this value could be read from AbstractAnalyticsManager