Include datas in GCSettingsEvent

[cshung]

This allow us to know if DATAS is enabled through the trace when the GCSettingsRundown event is enabled.

PerfView support is here

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[mrsharm]

CC: @Maoni0: We were just discussing this. There are other ways from an event perspective to discern if we are running DATAS e.g., if the SizeAdaptationSample event exists.

[cshung]

CC: @Maoni0: We were just discussing this. There are other ways from an event perspective to discern if we are running DATAS e.g., if the SizeAdaptationSample event exists.

I thought those events are intentionally not exposed through the API so that we reserve the right to alter it?

Meanwhile I figured we might want to add a few more flags (e.g. are we using clrgc?, are we using segments?)

Last but not least, wonder if we need to bump the event version for this, I am not doing this right now for simplicity, it doesn't seem required anywhere.

[mangod9]

I feel we should let it be as is for now. There are other mechanisms to retrieve this info, so I would not prioritize this now.

[cshung]

I feel we should let it be as is for now. There are other mechanisms to retrieve this info, so I would not prioritize this now.

Sure, the change is ready for it, it can always wait until the priority comes.