broadcast.go: saving of broadcast configuration fails if too big

[Saxon Milton]

If the broadcast configuration is large (say something with a big description field) we exceed the max entity value property size of 1500 bytes. We need to devise a way to store the configuration in a more size lenient way.

[Saxon Milton]

Properties that are indexed will have a size limit of 1500 bytes. We could tag our Variable Value field as “noindex” which would remove these limits. As far as I can tell, we don’t ever need to index the Value of variables anyway?

[Saxon Milton]

Resolved by iotsvc PR #105