Expose timeout parameter to packs.install on st2 client pack install

[hnanchahal]

Added timeout parameter for pack install st2 client run to help with long running installs. This was already expose in packs.install action but st2client was not updated to reflect the change.

[Kami]

I believe you also need to update st2common/st2common/openapi.yaml.j2, specifically PacksInstall object and also the corresponding API handler code in st2api/st2api/controllers/v1/packs.py.

[Kami]

Thanks for the contribution.

Overall, I'm fine with this change, but as mentioned above, it needs some more work + ideally at least the unit test for the API layer (that one shouldn't be too hard to add).

[cognifloyd]

We just reformatted the code with black. (Hooray!) And this PR got caught in the cross fire too. (Arrgh!) Please merge master into your branch, resolve the conflicts (Ouch! Sorry!), and reformat with black (I recommend running pre-commit install after you've merged master so that black reformatting happens automatically on commit).

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[cognifloyd]

@hnanchahal I just merged in master and dealt with reformatting. Would you please sign the CLA so we can move this PR forward?

[cognifloyd]

Rephrasing what Kami said, to finish up this PR, you need to add the server-side / API changes. Though the packs.install action has a timeout parameter, the API layer can't pass it on until it knows about it.

So, you've added the CLI changes and the spec changes, the last pieces are:

• change st2api/st2api/controllers/v1/packs.py (PackInstallController)
• add API tests in st2api/tests/unit/controllers/v1/test_packs.py

And sign the CLA :) If you can get this done within a week or two I'll merge it in time to release 3.7.0. Cheers!