Video Analytics additions for ExperienceEvent, part 2

[fmeschbe]

As a follow-up to #364, 4 properties have been broken out of PR #417 to be treated post-0.9.3 release:

• airDate
• digitalDate
• mediaSegments
• bitrateAverageBucket

See PR #433.

What are the schemas that are affected by the issue

/context/experienceevent.schema.json

What are examples of products that are impacted by the issue

Video Analytics
Video Ads
Media marketing in Target

[fmeschbe]

Just noticed that PR #433 shows as merged while the actual code history of the master branch does not show this merge and the pieces intended to be added by this PR are not actually in master.

We'll have to further investigate this and maybe respin the PR with the intended contents.