Added `--daprd-flags` option to `dapr run`

[ItalyPaleAle]

Description

Adds a --daprd-flags option to dapr run to allow passing arbitrary flags to daprd.

Issue reference

Fixes #1038

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• [X] Code compiles correctly
• [X] Created/updated tests
• [ ] Extended the documentation
  • This is an advanced option and can be learnt about from dapr run --help. I don't know if this needs to be put in the docs in addition to that

[codecov[bot]]

Codecov Report

Merging #1039 (8ef909c) into master (d229506) will increase coverage by 0.13%. The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master    #1039      +/-   ##
==========================================
+ Coverage   29.34%   29.47%   +0.13%     
==========================================
  Files          35       35              
  Lines        2334     2344      +10     
==========================================
+ Hits          685      691       +6     
- Misses       1574     1576       +2     
- Partials       75       77       +2     

Impacted Files	Coverage Δ
pkg/standalone/run.go	59.55% <66.66%> (+0.02%)	:arrow_up:

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[pravinpushkar]

If it is only for dev/test purpose(not recommended to be used by users) then can we have something like --daprd-dev-flags or something like that . I think it will provide clarity whether user should prefer direct flags or this one. @ItalyPaleAle @mukundansundar @yaron2

[dapr-bot]

This pull request has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in 7 days if no further activity occurs. Please feel free to give a status update now, ping for review, or re-open when it's ready. Thank you for your contributions!

[ItalyPaleAle]

Bumping this up. @mukundansundar @yaron2 WDYT about this PR?

One thing that I learnt more recently than this PR is that we could mark the flag as "hidden", so it will still available but it won't appear in the list when people do dapr --help. It's a sort of "IYKYK" 😃

[dapr-bot]

This pull request has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in 7 days if no further activity occurs. Please feel free to give a status update now, ping for review, or re-open when it's ready. Thank you for your contributions!

[ItalyPaleAle]

Still pretty much relevant to me

[mukundansundar]

closing this PR for now. Can be handled as part of running multiple dapr apps feature if needed.