[CI] XPackRestIT p0=indices.freeze/10_basic/Basic L74 Failure

[davidkyle]

java.lang.AssertionError: Failure at [indices.freeze/10_basic:74]: expected [2xx] status code but api [search] returned [503 Service Unavailable] [{"error":{"root_cause":[],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[],"stack_trace":"Failed to execute phase [query], all shards failed\r\n\tat org.elasticsearch.action.search.AbstractSearchAsyncAction.onPhaseFailure(AbstractSearchAsyncAction.java:
...

https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+7.6+multijob-windows-compatibility/os=windows-2019/53/console
https://gradle-enterprise.elastic.co/s/t66es3e2pbe6g

Does not reproduce:

./gradlew ':x-pack:plugin:integTestRunner' --tests "org.elasticsearch.xpack.test.rest.XPackRestIT" \
  -Dtests.method="test {p0=indices.freeze/10_basic/Basic}" \
  -Dtests.seed=143749813EC5AF86 \
  -Dtests.security.manager=true \
  -Dtests.locale=mt-MT \
  -Dtests.timezone=Africa/Ouagadougou \
  -Dcompiler.java=13 \
  -Dtests.rest.blacklist=getting_started/10_monitor_cluster_health/*

[elasticmachine]

Pinging @elastic/es-core-features (:Core/Features/ILM+SLM)

[mark-vieira]

Couple more of these:

https://gradle-enterprise.elastic.co/s/gbbfvkr5jo5x4/tests/fcijb24gqtmnc-dyizuu7rv265i
https://gradle-enterprise.elastic.co/s/kzkf35kl7jwxk/tests/fcijb24gqtmnc-dyizuu7rv265i

[elasticmachine]

Pinging @elastic/es-distributed (:Distributed/Engine)

[elasticmachine]

Pinging @elastic/es-search (:Search/Search)

[dnhatn]

Relates to #51708?