[CI] UpgradeClusterClientYamlTestSuiteIT class failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #8040 / 8.0.1_bwc
• elasticsearch-periodic #8034 / 8.0.1_bwc
• elasticsearch-periodic #8028 / 8.0.1_bwc

Reproduction Line:

./gradlew ":x-pack:qa:rolling-upgrade:v8.0.1#oldClusterTest" -Dtests.class="org.elasticsearch.upgrades.UpgradeClusterClientYamlTestSuiteIT" -Dtests.method="test {p0=old_cluster/90_ml_data_frame_analytics_crud/Put classification job on the old cluster}" -Dtests.seed=6AC391FFC14AB04A -Dtests.bwc=true -Dtests.locale=ksb-TZ -Dtests.timezone=Antarctica/McMurdo -Druntime.java=24

Applicable branches:
8.19

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Failure in test setup: Failed to initialize at least 3 watcher nodes

Issue Reasons:

• [8.19] 3 failures in class org.elasticsearch.upgrades.UpgradeClusterClientYamlTestSuiteIT (0.3% fail rate in 1000 executions)
• [8.19] 3 failures in step 8.0.1_bwc (100.0% fail rate in 3 executions)
• [8.19] 3 failures in pipeline elasticsearch-periodic (100.0% fail rate in 3 executions)

Note:
This issue was created using new test triage automation. Please report issues or feedback to es-delivery.

[elasticsearchmachine]

Pinging @elastic/es-distributed-coordination (Team:Distributed Coordination)

[DaveCTurner]

Duplicate of #125623

[elasticsearchmachine]

Pinging @elastic/es-core-infra (Team:Core/Infra)