schema-reporting: Add startup logging to schema reporting

[sachindshinde]

This PR adds startup logging to schema reporting, specifically logging at INFO level the options and the EdgeServerInfo object.

[abernix]

This isn't meant to circumvent @jsegaran's request for review, however, given that automatic schema reporting is still "experimental" (and prefixed experimental_ as such), we're going to put this into the patch release today before #4236 happens in the next major (which would probably pair well with #3918, I imagine?).

Certainly don't let that prevent important follow-up changes to this, based on @jsegaran's review though. 😉

[abernix]

I certainly didn't notice that this was targeting another branch on #4236 that I was referring to. 😄

Therefore, I've cherry picked it into master as well: 34a5c54

[sachindshinde]

Sounds good to me 🙂 (there was a slight dependency on #4236 for options names in the logs, but @trevor-scheer fixed that in 1033029 .