v1.17: Parameterize max streams per ms (backport of #707)

[mergify]

Problem

The upper layer like jato-relayer may want different PPS for tpu and tpu_forward than the default value. Our validator may use different values for tpu vs forward. This changes makes it possible.

Summary of Changes

Make it parameter instead of the hard coded

Fixes #

---

This is an automatic backport of pull request #707 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of f2aa4f0 has failed:

On branch mergify/bp/v1.17/pr-707
Your branch is up to date with 'origin/v1.17'.

You are currently cherry-picking commit f2aa4f0741.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   streamer/src/quic.rs

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   client/src/connection_cache.rs
	both modified:   core/src/tpu.rs
	both modified:   quic-client/tests/quic_client.rs
	both modified:   streamer/src/nonblocking/quic.rs
	deleted by us:   streamer/src/nonblocking/stream_throttle.rs

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 92.30769% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 81.6%. Comparing base (a0020cf) to head (c6119ce).

Additional details and impacted files

@@            Coverage Diff            @@
##            v1.17    #1105     +/-   ##
=========================================
- Coverage    81.6%    81.6%   -0.1%     
=========================================
  Files         806      806             
  Lines      219335   219345     +10     
=========================================
- Hits       179108   179067     -41     
- Misses      40227    40278     +51     

[t-nelson]

this is doing far more than the title implies. when did we decide to backport ema? this is too much

[lijunwangs]

this is doing far more than the title implies. when did we decide to backport ema? this is too much

stream_throttle.rs is a merge issue -- this PR does not need it. Removed.

[t-nelson]

this is doing far more than the title implies. when did we decide to backport ema? this is too much

stream_throttle.rs is a merge issue -- this PR does not need it. Removed.

woot!