Informs: cockroachdb#119289
Release note: None
Epic: None

119535: roachtest: fail tests if monitor encounters an error r=srosenberg a=renatolabs

This commit updates the roachprod and roachtest monitors to 1) send an
event when the monitor is abruptly terminated (i.e., reader stream
sees an EOF when the associated context is *not* canceled); and 2)
return any errors encountered by the roachprod monitor in roachtest,
causing the currently running test to fail. The error has TestEng
ownership so that teams are not be pinged on these kinds of flakes.

The main purpose of this change is for the monitor to fail in
situations where the monitored node is preempted by the cloud
provider. Previously, these events would be ignored, leading to a test
timeout, wasting resources and leading to confusing test failures
being reported on GitHub.

Fixes: #118563.

Release note: None

119725: changefeedccl: disable TestChangefeedOnlyInitialScanCSV with pulsar r=rharding6373 a=jayshrivastava

Informs: #119289
Release note: None
Epic: None

119732: master: Update pkg/testutils/release/cockroach_releases.yaml r=rail a=github-actions[bot]

Update pkg/testutils/release/cockroach_releases.yaml with recent values.

Epic: None
Release note: None
Release justification: test-only updates

Co-authored-by: Renato Costa <renato@cockroachlabs.com>
Co-authored-by: Jayant Shrivastava <jayants@cockroachlabs.com>
Co-authored-by: CRL Release bot <teamcity@cockroachlabs.com>

Although the comments in mock pulsar sink say that emitting messages and
flushing are synchronous, the use of a buffered channel to transmit
messages from the mock producer to the test feed makes it asynchronous.
This leads to problems where the consumer (the test) may not have stored
the data in a "durable" way before the changefeed job completes. As a
result, tests can be flaky as it does not always look like all rows have
been emitted.

This PR makes the mock pulsar sink synchronous by using an unbuffered
channel.

Fixes: cockroachdb#119289
Informs: cockroachdb#118899

Epic: CRDB-9180

Release note: None

123228: changefeedccl: make mock pulsar sink synchronous r=asg0451 a=rharding6373

Although the comments in mock pulsar sink say that emitting messages and flushing are synchronous, the use of a buffered channel to transmit messages from the mock producer to the test feed makes it asynchronous. This leads to problems where the consumer (the test) may not have stored the data in a "durable" way before the changefeed job completes. As a result, tests can be flaky as it does not always look like all rows have been emitted.

This PR makes the mock pulsar sink synchronous by using an unbuffered channel.

Fixes: #119289
Informs: #118899

Epic: CRDB-9180

Release note: None

Co-authored-by: rharding6373 <harding@cockroachlabs.com>