Add support for display_query_parameters in resource_dashboard

[ognnaot]

Maybe it's just my use case, but I have display_query_parameters enabled on my dashboards. It's currently not supported so it always gets set to false upon terraform apply.

[nathmclean]

This will require some work to https://github.com/spaceapegames/go-wavefront as well as the provider. There are a fair few missing fields from go-wavefront and the provider compared to what is available in the API.

I'll put a ticket on our internal backlog to look at adding the additional fields, but I'm not sure when we'll get to it.

I've added some labels to this issue, maybe someone will pick it up and implement the changes before we get to it.

[ognnaot]

I added the parameter in my local fork. A few lines in go-wavefront/dashboard.go and resource_dashboard.go. LMK if I should submit a PR.
I'm sure there are many more missing options. I just happen to use display_query_parameters.

[nathmclean]

Feel free to submit a PR

[goldver]

Hi guys, I have some issue,
do we have any expectation for merge fix of @ognnaot to master? Thanks