[BUG] org.opensearch.flowframework.FlowFrameworkPluginIT.testPluginInstalled test is failing on Windows CI

[owaiskazi19]

What is the bug?

org.opensearch.flowframework.FlowFrameworkPluginIT > testPluginInstalled FAILED

    org.opensearch.client.ResponseException: method [GET], host [http://0.0.0.0:0/], URI [/_cat/plugins], status line [HTTP/1.1 404 Not Found]

        at __randomizedtesting.SeedInfo.seed([FEE4D7C34DADF2E3:F643B94C26B8D07D]:0)
Suite: Test class org.opensearch.flowframework.FlowFrameworkPluginIT
        at app//org.opensearch.client.RestClient.convertResponse(RestClient.java:376)
        at app//org.opensearch.client.RestClient.performRequest(RestClient.java:346)
        at app//org.opensearch.client.RestClient.performRequest(RestClient.java:321)
        at app//org.opensearch.flowframework.FlowFrameworkPluginIT.testPluginInstalled(FlowFrameworkPluginIT.java:34)
  1> [2023-10-12T13:17:21,342][INFO ][o.o.f.FlowFrameworkPluginIT] [testPluginInstalled] before test

How can one reproduce the bug?

REPRODUCE WITH: gradlew ':integTest' --tests "org.opensearch.flowframework.FlowFrameworkPluginIT.testPluginInstalled" -Dtests.seed=FEE4D7C34DADF2E3 -Dtests.security.manager=false -Dtests.jvm.argline="-XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=64m" -Dtests.locale=en-AU -Dtests.timezone=America/Mexico_City -Druntime.java=17

What is the expected behavior?

Test should pass

What is your host/environment?

Windows

Do you have any screenshots?

If applicable, add screenshots to help explain your problem.

Do you have any additional context?

Add any other context about the problem.

[dbwiddis]

See here for something possibly similar. Can we try it as a fix?

integTest {
    // ...
    doFirst {
        // ...
        // There seems to be an issue when running multi node run or integ tasks with unicast_hosts
        // not being written, the waitForAllConditions ensures it's written
        getClusters().forEach { cluster ->
            cluster.waitForAllConditions()
        }
    }
}