update oxide-tokio-rt to v0.1.4, tokio to v1.52.0 (#10272)

This branch updates our dependency on `oxide-tokio-rt` to pick up Tokio
v1.52.0 and the corresponding changes to the default runtime settings in
`oxide-tokio-rt`. In particular, this allows us to pick up two of my
upstream fixes in Tokio for a pair of issues that have been major thorns
in our side for some time:

* Tokio PR tokio-rs/tokio#7431, released in [Tokio v1.51.0], changes the
  multi-threaded runtime to allow tasks in the LIFO slot to participate
  in work-stealing. Therefore, it should no longer be necessary to
  disable the LIFO slot optimization, as the pathology described in
  #8334, where a task placed in the LIFO slot can become permanently or
  semi-permanently stuck while the task that notified them runs for a
  long time without yielding, can no longer occur. `oxide-tokio-rt`
  v0.1.4 removes the runtime configuration to disable the LIFO slot as
  the issue has been fixed upstream.

* Tokio PR tokio-rs/tokio#8010, released in [Tokio v1.52.0], which adds
  eager handoff for the I/O and time drivers in the multi-threaded
  runtime. This is currently an experimental feature, although it is
  your author's opinion that this is really a fix for incorrect runtime
  behavior.[^1] It changes worker threads in the multi-threaded runtime
  to wake another worker prior to polling tasks if that worker had
  previously been parked on the I/O driver or timer wheel. Eagerly
  handing off these resources should prevent pathologies such as #9619.
  `oxide-tokio-rt` v0.1.4 enables this behavior by default.

Fixes #8334
Fixes #9619

[Tokio v1.52.0]:
  https://github.com/tokio-rs/tokio/releases/tag/tokio-1.52.0
[Tokio v1.51.0]:
  https://github.com/tokio-rs/tokio/releases/tag/tokio-1.51.0

[^1]: Cue @leftwo's dictum that a "performance regression" from fixing
      incorrect behavior...isn't a performance regression.

Author: hawkw

Cargo.lock

@@ -659,7 +659,7 @@ omicron-test-utils = { path = "test-utils" }
 omicron-workspace-hack = "0.1.0"
 omicron-zone-package = "0.12.2"
 oxide-client = { path = "clients/oxide-client" }
-oxide-tokio-rt = "0.1.2"
+oxide-tokio-rt = "0.1.4"
 oxide-vpc = { git = "https://github.com/oxidecomputer/opte", rev = "e547d07b08c3f3d6c821c9eb7a958adcffce6e56", features = [ "api", "std" ] }
 oxlog = { path = "dev-tools/oxlog" }
 oxnet = "0.1.4"