Add waiter config params to emr.add_job_flow_steps

[ShelRoman]

A small tweak related to #27286

 WaiterConfig={
     "Delay": 5,
     "MaxAttempts": 100,
}

The hardcoded config isn't usable with jobs that are running longer than ~500 seconds.
Moved those values into default arguments of the add_job_flow_steps() function which won't change default behaviour but will add some flexibility for use cases with longer emr steps.

Also considered option to pass whole config dict instead of waiter_delay and waiter_max_attempts, but these changes are smaller.

[boring-cyborg]

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[ShelRoman]

@eladkal could you please take a look also? I didn't intend to remove you from the reviewers but it happened

[ShelRoman]

@Taragolis could you please merge this one?
I don't have write access to do that.

[potiuk]

@Taragolis could you please merge this one? I don't have write access to do that.

Just to make sure to set you expectations. Please do not ping people like that. It's quite selfish.

Be patient. There are 100s of PR being possibly looked at in parallel and merged in due time. You are looking at 1 PR while people who merge them at many @ShelRoman. be mindful for people time and accept the fact that people here work in their free time - and do not expect "immediate" reactions.

Watch my talk https://www.youtube.com/watch?v=G6VjYvKr2wQ&list=PLGudixcDaxY2LxjeHpZRtzq7miykjjFOn&index=55 about empathy to understand why.

[ShelRoman]

@potiuk thanks for the clarification and the link. :)
I didn't expect an immediate reaction, which might be commercial deformation kicks in, since it's my first PR in open-source.

[boring-cyborg]

Awesome work, congrats on your first merged pull request!