Run x-pack tests under FIPS mode (#17254)

This commit adds two new CI cells to cover x-pack tests running in FIPS mode. This ensures we have coverage of these features when running existing x-pack tests.

Author: donoghuc

.buildkite/pull_request_pipeline.yml

@@ -267,6 +267,40 @@ steps:
  source .buildkite/scripts/common/container-agent.sh
  x-pack/ci/integration_tests.sh
 
+ - label: ":lab_coat: x-pack unit tests - FIPS mode"
+ key: "x-pack-unit-tests-fips"
+ agents:
+ provider: gcp
+ imageProject: elastic-images-prod
+ image: family/platform-ingest-logstash-ubuntu-2204
+ machineType: "n2-standard-4"
+ diskSizeGb: 64
+ retry:
+ automatic:
+ - limit: 3
+ command: |
+ set -euo pipefail
+
+ docker build -t test-runner-image -f x-pack/distributions/internal/observabilitySRE/docker/Dockerfile .
+ docker run -e FIPS_MODE=true test-runner-image x-pack/ci/unit_tests.sh
+
+ - label: ":lab_coat: x-pack integration - FIPS mode"
+ key: "integration-tests-x-pack-fips"
+ agents:
+ provider: gcp
+ imageProject: elastic-images-prod
+ image: family/platform-ingest-logstash-ubuntu-2204
+ machineType: "n2-standard-4"
+ diskSizeGb: 64
+ retry:
+ automatic:
+ - limit: 3
+ command: |
+ set -euo pipefail
+
+ docker build -t test-runner-image -f x-pack/distributions/internal/observabilitySRE/docker/Dockerfile .
+ docker run -e FIPS_MODE=true test-runner-image x-pack/ci/integration_tests.sh
+
  - wait: ~
  continue_on_failure: true
 

x-pack/ci/integration_tests.sh

@@ -17,4 +17,8 @@ if [ -n "$BUILD_JAVA_HOME" ]; then
  export LS_JAVA_HOME="$BUILD_JAVA_HOME"
 fi
 
-./gradlew runXPackIntegrationTests
+if [ -n "$FIPS_MODE" ]; then
+ ./gradlew runXPackIntegrationTests -PrunTestsInFIPSMode=true
+else
+ ./gradlew runXPackIntegrationTests
+fi

x-pack/ci/unit_tests.sh

@@ -16,4 +16,8 @@ if [ -n "$BUILD_JAVA_HOME" ]; then
  GRADLE_OPTS="$GRADLE_OPTS -Dorg.gradle.java.home=$BUILD_JAVA_HOME"
 fi
 
-./gradlew runXPackUnitTests
+if [ -n "$FIPS_MODE" ]; then
+ ./gradlew runXPackUnitTests -PrunTestsInFIPSMode=true
+else
+ ./gradlew runXPackUnitTests
+fi