Update OpenShift supported versions to 4.8-4.12

[thbkrkr]

Update OpenShift supported versions to 4.8-4.12.

Relates to #6592.

[pebrc]

Maybe I missed it, but do we want to run a full set of e2e tests before we officially declare support. I think #6592 only did a smoke test?

[thbkrkr]

Maybe I missed it, but do we want to run a full set of e2e tests before we officially declare support. I think #6592 only did a smoke test?

No, you're right, I was waiting for it to end. There is no way to run e2e-tests from main by specifying an operator image. I ran them manually on OCP 4.12.9:

go run -tags='release' test/e2e/cmd/main.go run  \
	--operator-image=docker.elastic.co/eck/eck-operator:2.7.0-bc4  \
	--e2e-image=docker.elastic.co/eck-ci/eck-e2e-tests:2.7.0-380d6f28 \
	--elastic-stack-version=8.6.2 \
	--e2e-tags='e2e release'  \
	--test-regex="^Test" --test-license=in-memory --test-license-pkey-path= --monitoring-secrets= \
	--elastic-stack-images=stack-versions-def.json --log-verbosity=1 --log-to-file=true --test-timeout=30m \
        --pipeline=e2e/e2e-test-270-bc4-dev --build-number=131 --provider=ocp --clusterName=eck-e2e-test-270-bc4-dev \
        --skip-cleanup=true --deploy-chaos-job=false --test-env-tags=""

All tests (110) passed.

--- PASS: TestGlobalCA (262.36s)
--- PASS: TestNameValidation (92.92s)
--- PASS: TestSamples (533.84s)
--- PASS: TestSmoke (129.42s)
--- PASS: TestVersionUpgradeOrdering (354.77s)
--- PASS: TestSystemIntegrationConfig (62.22s)
--- PASS: TestAgentConfigRef (61.93s)
--- PASS: TestMultipleOutputConfig (81.21s)
--- PASS: TestWebhook (2.96s)
--- PASS: TestCrossNSAssociation (77.18s)
--- PASS: TestAPMKibanaAssociation (72.01s)
--- PASS: TestAPMAssociationWithNonExistentES (6.19s)
--- PASS: TestAPMAssociationWhenReferencedESDisappears (69.59s)
--- PASS: TestUpdateConfiguration (117.01s)
--- PASS: TestAPMStandalone (30.27s)
--- PASS: TestAPMStandaloneWithRUM (27.31s)
--- PASS: TestAPMStandaloneNoTLS (27.24s)
--- PASS: TestFilebeatDefaultConfig (98.28s)
--- PASS: TestMetricbeatDefaultConfig (148.38s)
--- PASS: TestHeartbeatConfig (73.75s)
--- PASS: TestBeatSecureSettings (116.92s)
--- PASS: TestBeatConfigRef (101.20s)
--- PASS: TestAuditbeatConfig (108.32s)
--- PASS: TestPacketbeatConfig (116.39s)
--- PASS: TestBeatKibanaRefWithTLSDisabled (104.06s)
--- PASS: TestBeatKibanaRef (108.16s)
--- PASS: TestVersionUpgradeToLatest8x (53.76s)
--- PASS: TestWebhook (2.98s)
--- PASS: TestJSONLog (0.00s)
--- PASS: Test_helper_streamTestJobOutput_withError (0.01s)
--- PASS: Test_helper_streamTestJobOutput (0.01s)
--- PASS: Test_goLangTestTimestampParser (0.00s)
--- PASS: Test_stdTimestampParser (0.00s)
--- PASS: TestElasticMapsServerCrossNSAssociation (82.11s)
--- PASS: TestElasticMapsServerStandalone (30.56s)
--- PASS: TestElasticMapsServerTLSDisabled (82.06s)
--- PASS: TestElasticMapsServerVersionUpgradeToLatest8x (130.41s)
--- PASS: TestEnterpriseSearchConfigUpdate (256.09s)
--- PASS: TestEnterpriseSearchCrossNSAssociation (108.79s)
--- PASS: TestEnterpriseSearchVersionUpgradeToLatest8x (322.19s)
--- PASS: TestEnterpriseSearchTLSDisabledVersionUpgradeToLatest8x (331.09s)
--- PASS: TestESUserProvidedAuth (190.29s)
--- PASS: TestAutoscalingLegacy (277.88s)
--- PASS: TestAutoscaling (274.68s)
--- PASS: TestCustomHTTPCA (221.98s)
--- PASS: TestHTTPECDSA (219.11s)
--- PASS: TestCustomTransportCA (64.96s)
--- PASS: TestUpdateHTTPCertSAN (124.12s)
--- PASS: TestRedClusterCanBeModifiedByDisablingPredicate (124.12s)
--- PASS: TestKillOneDataNode (100.88s)
--- PASS: TestKillOneMasterNode (122.33s)
--- PASS: TestKillSingleNodeReusePV (91.45s)
--- PASS: TestDeleteServices (54.82s)
--- PASS: TestDeleteElasticUserSecret (121.03s)
--- PASS: TestDeleteCACert (55.06s)
--- PASS: TestForceUpgradePendingPods (61.13s)
--- PASS: TestForceUpgradePendingPodsInOneStatefulSet (233.17s)
--- PASS: TestForceUpgradeBootloopingPods (82.22s)
--- PASS: TestHTTPWithoutTLS (57.83s)
--- PASS: TestUpdateESSecureSettings (522.82s)
--- PASS: TestEnterpriseLicenseSingle (58.96s)
--- PASS: TestEnterpriseTrialLicense (63.89s)
--- PASS: TestMutationHTTPToHTTPS (490.95s)
--- PASS: TestMutationHTTPSToHTTP (298.07s)
--- PASS: TestMutationMdiToDedicated (101.20s)
--- PASS: TestMutationMoreNodes (86.17s)
--- PASS: TestMutationLessNodes (77.59s)
--- PASS: TestMutationResizeMemoryUp (181.24s)
--- PASS: TestMutationResizeMemoryDown (183.21s)
--- PASS: TestMutationSecondMasterSet (167.93s)
--- PASS: TestMutationSecondMasterSetDown (126.04s)
--- PASS: TestMutationRollingDownscaleCombination (121.18s)
--- PASS: TestMutationAndReversal (302.95s)
--- PASS: TestMutationNodeSetReplacementWithChangeBudget (184.79s)
--- PASS: TestMutationWithLargerMaxUnavailable (153.42s)
--- PASS: TestCustomConfiguration (100.28s)
--- PASS: TestRemoteCluster (71.35s)
--- PASS: TestReversalIllegalConfig (293.72s)
--- PASS: TestReversalRiskyMasterDownscale (98.45s)
--- PASS: TestReversalStatefulSetRename (94.90s)
--- PASS: TestReversalRiskyMasterReconfiguration (284.87s)
--- PASS: TestESStackMonitoring (104.93s)
--- PASS: TestStackConfigPolicy (161.57s)
--- PASS: TestESSuspendPod (302.49s)
--- PASS: TestCoordinatingNodes (57.94s)
--- PASS: TestResourcesRequirements (67.04s)
--- PASS: TestElasticsearchCRDOpenAPIValidation (2.96s)
--- PASS: TestVersionUpgradeSingleToLatest8x (92.14s)
--- PASS: TestVersionUpgradeTwoNodesToLatest8x (107.70s)
--- PASS: TestVolumeEmptyDir (51.78s)
--- PASS: TestVolumeRetention (105.17s)
--- PASS: TestVolumeMultiDataPath (60.80s)
--- PASS: TestVolumeExpansion (64.49s)
--- PASS: TestCrossNSAssociation (68.23s)
--- PASS: TestEntSearchAssociation (103.11s)
--- PASS: TestKibanaAssociationWithNonExistentES (3.22s)
--- PASS: TestKibanaAssociationWhenReferencedESDisappears (79.38s)
--- PASS: TestKillKibanaPod (103.87s)
--- PASS: TestKillKibanaDeployment (100.90s)
--- PASS: TestUpdateKibanaSecureSettings (167.18s)
--- PASS: TestUpdateKibanaResources (91.95s)
--- PASS: TestKBStackMonitoring (126.08s)
--- PASS: TestKibanaStandalone (70.38s)
--- PASS: TestTelemetry (81.78s)
--- PASS: TestVersionUpgradeToLatest8x (270.91s)
--- PASS: TestVersionUpgradeAndRespecToLatest8x (129.82s)
--- PASS: Test_IsGKE (0.00s)
--- PASS: TestIsValidUpgrade (0.00s)
--- PASS: TestGetUpgradePathTo8x (0.00s)
--- PASS: Test_clusterUnavailability (0.00s)