Update Azure Data Explorer query runner to latest version, add managed identity

[spacentropy]

What type of PR is this? (check all applicable)

• Refactor

Description

Hello. Here's the list of things that were improved:

• upgraded Azure Data Explorer(Kusto) library to the latest version
• added Materialized Views to schema viewer
• added Managed Identities support for secrets-less auth
• added query user annotation in request description
• added data_scanned
• added simple test to get_schema

[arikfr]

Thank you for the PR! How about we split the query runner into two: one for MSI and one for without? This way it will be clear which properties are required for each variant.

[spacentropy]

@arikfr sure. Should it be two files or just one? how do I avoid duplicating logic?

[guidopetri]

@spacentropy , thanks for the PR! We've updated a lot of things now that we're Community-driven so - if you're still interested in getting this merged - would you mind rebasing off master to re-run the CI?

We're trying to clean up our PR todo list, so if you're not interested, that's fine - we'll close the PR in about a week if we don't hear back. If you're interested in reopening the PR afterwards, we would also very much welcome that.

[spacentropy]

Hello! Yes, I will prepare everything this week.

[justinclift]

@spacentropy This might be useful:

https://github.com/getredash/redash/wiki/Local-development-setup

[guidopetri]

@spacentropy no worries, take your time. We just wanted to make sure this wasn't an abandoned PR - if it takes a month for you to get around to it it's also fine :)

[codecov]

Codecov Report

Attention: Patch coverage is 11.76471% with 15 lines in your changes are missing coverage. Please review.

Project coverage is 63.76%. Comparing base (af0773c) to head (674ffa7).
Report is 42 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5495      +/-   ##
==========================================
- Coverage   63.82%   63.76%   -0.06%     
==========================================
  Files         161      161              
  Lines       13060    13085      +25     
  Branches     1803     1810       +7     
==========================================
+ Hits         8335     8344       +9     
- Misses       4425     4437      +12     
- Partials      300      304       +4     

Files	Coverage Δ
redash/query_runner/azure_kusto.py	35.13% <11.76%> (-3.11%)	⬇️

[spacentropy]

@justinclift hi. I'm finally(lol) ready to merge this.

[spacentropy]

@eradman @arikfr Hello. I would like to merge this :-) We've been running this branch for a while.