Fix osquery cypress tests (#163988)

## Summary

Adjust tests to #161614
Split tests into smaller files to better utilize parallelization and
increase the stability of tests

(cherry picked from commit fd33ed5)

.buildkite/pipelines/pull_request/osquery_cypress.yml

@@ -12,3 +12,13 @@ steps:
           limit: 1
     artifact_paths:
       - "target/kibana-osquery/**/*"
+
+  - command: .buildkite/scripts/steps/functional/osquery_cypress_burn.sh
+    label: 'Osquery Cypress Tests, burning changed specs'
+    agents:
+      queue: n2-4-spot
+    depends_on: build
+    timeout_in_minutes: 50
+    soft_fail: true
+    artifact_paths:
+      - "target/kibana-osquery/**/*"

.buildkite/scripts/pipelines/pull_request/pipeline.ts

@@ -80,6 +80,7 @@ const uploadPipeline = (pipelineContent: string | object) => {
         getPipeline('.buildkite/pipelines/pull_request/security_solution_explore.yml')
       );
       pipeline.push(getPipeline('.buildkite/pipelines/pull_request/defend_workflows.yml'));
+      pipeline.push(getPipeline('.buildkite/pipelines/pull_request/osquery_cypress.yml'));
     }
 
     if (
@@ -200,7 +201,8 @@ const uploadPipeline = (pipelineContent: string | object) => {
 
     pipeline.push(getPipeline('.buildkite/pipelines/pull_request/post_build.yml'));
 
-    uploadPipeline(pipeline.join('\n'));
+    // remove duplicated steps
+    uploadPipeline([...new Set(pipeline)].join('\n'));
   } catch (ex) {
     console.error('PR pipeline generation error', ex.message);
     process.exit(1);

.buildkite/scripts/steps/functional/osquery_cypress_burn.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+source .buildkite/scripts/common/util.sh
+source .buildkite/scripts/steps/functional/common_cypress.sh
+
+.buildkite/scripts/bootstrap.sh
+node scripts/build_kibana_platform_plugins.js
+
+export JOB=kibana-osquery-cypress
+
+buildkite-agent meta-data set "${BUILDKITE_JOB_ID}_is_test_execution_step" 'false'
+
+echo "--- Osquery Cypress tests, burning changed specs (Chrome)"
+
+yarn --cwd x-pack/plugins/osquery cypress:changed-specs-only

x-pack/plugins/osquery/cypress.config.ts

@@ -36,6 +36,6 @@ export default defineCypressConfig({
     baseUrl: 'http://localhost:5601',
     experimentalRunAllSpecs: true,
     experimentalMemoryManagement: true,
-    numTestsKeptInMemory: 10,
+    numTestsKeptInMemory: 3,
   },
 });