e2e: Fail faster if checkup has failed

[RamLavi]

Currently the e2e test waits for a JobComplete status, so if the checkup job fails then the test hangs until the timeout.
Check for JobFailed condition and fail with an informative error fail.

[RamLavi]

example for failure:

make e2e-test
mkdir -p /home/ralavi/go/src/github.com/kiagnose/kubevirt-realtime-checkup/_go-cache
podman run --rm \
	-v /home/ralavi/go/src/github.com/kiagnose/kubevirt-realtime-checkup:/go/src/github.com/kiagnose/kubevirt-realtime-checkup:Z \
	-v /home/ralavi/go/src/github.com/kiagnose/kubevirt-realtime-checkup/_go-cache:/root/.cache/go-build:Z \
	-v /home/ralavi/.kube/sno03-cnvqe2-rdu2:/root/.kube:Z,ro \
	--workdir /go/src/github.com/kiagnose/kubevirt-realtime-checkup \
	-e KUBECONFIG=/root/.kube/kubeconfig \
	-e TEST_NAMESPACE=realtime-checkup-1 \
	-e TEST_CHECKUP_IMAGE=quay.io/ramlavi/kubevirt-realtime-checkup:devel \
	-e VM_UNDER_TEST_CONTAINER_DISK_IMAGE=quay.io/kiagnose/kubevirt-realtime-checkup-vm:main \
	docker.io/library/golang:1.19.4-bullseye \
	go test -v ./tests/...
=== RUN   TestTests
Running Suite: Tests Suite - /go/src/github.com/kiagnose/kubevirt-realtime-checkup/tests
========================================================================================
Random Seed: 1701606425

Will run 1 of 1 specs
------------------------------
• [FAILED] [13.413 seconds]
Checkup execution [It] should complete successfully
/go/src/github.com/kiagnose/kubevirt-realtime-checkup/tests/checkup_test.go:80

  [FAILED] checkup failed: {
  	"spec.param.oslatDuration": "10m",
  	"spec.param.oslatLatencyThresholdMicroSeconds": "45",
  	"spec.param.vmUnderTestContainerDiskImage": "quay.io/kiagnose/kubevirt-realtime-checkup-vm:main",
  	"spec.param.vmUnderTestTargetNodeName": "",
  	"spec.timeout": "15m",
  	"status.completionTimestamp": "2023-12-03T12:27:13Z",
  	"status.failureReason": "admission webhook \"virtualmachineinstances-create-validator.kubevirt.io\" denied the request: spec.domain.memory.hugepages must be requested when NUMA topology strategy is set in spec.domain.cpu.numa.guestMappingPassthrough",
  	"status.startTimestamp": "2023-12-03T12:27:13Z",
  	"status.succeeded": "false"
  }
  In [It] at: /go/src/github.com/kiagnose/kubevirt-realtime-checkup/tests/checkup_test.go:90 @ 12/03/23 12:27:17.556
------------------------------

Summarizing 1 Failure:
  [FAIL] Checkup execution [It] should complete successfully
  /go/src/github.com/kiagnose/kubevirt-realtime-checkup/tests/checkup_test.go:90

Ran 1 of 1 Specs in 13.414 seconds
FAIL! -- 0 Passed | 1 Failed | 0 Pending | 0 Skipped
--- FAIL: TestTests (13.42s)
FAIL
FAIL	github.com/kiagnose/kubevirt-realtime-checkup/tests	13.423s
FAIL
make: *** [Makefile:67: e2e-test] Error 1

[RamLavi]

PR passes e2e test on CNV4.14 cluster

make e2e-test
mkdir -p /home/ralavi/go/src/github.com/kiagnose/kubevirt-realtime-checkup/_go-cache
podman run --rm \
	-v /home/ralavi/go/src/github.com/kiagnose/kubevirt-realtime-checkup:/go/src/github.com/kiagnose/kubevirt-realtime-checkup:Z \
	-v /home/ralavi/go/src/github.com/kiagnose/kubevirt-realtime-checkup/_go-cache:/root/.cache/go-build:Z \
	-v /home/ralavi/.kube/sno03-cnvqe2-rdu2:/root/.kube:Z,ro \
	--workdir /go/src/github.com/kiagnose/kubevirt-realtime-checkup \
	-e KUBECONFIG=/root/.kube/kubeconfig \
	-e TEST_NAMESPACE=realtime-checkup-1 \
	-e TEST_CHECKUP_IMAGE=quay.io/ramlavi/kubevirt-realtime-checkup:devel \
	-e VM_UNDER_TEST_CONTAINER_DISK_IMAGE=quay.io/kiagnose/kubevirt-realtime-checkup-vm:main \
	docker.io/library/golang:1.19.4-bullseye \
	go test -v ./tests/...
=== RUN   TestTests
Running Suite: Tests Suite - /go/src/github.com/kiagnose/kubevirt-realtime-checkup/tests
========================================================================================
Random Seed: 1701610513

Will run 1 of 1 specs
•

Ran 1 of 1 Specs in 91.373 seconds
SUCCESS! -- 1 Passed | 0 Failed | 0 Pending | 0 Skipped
--- PASS: TestTests (91.37s)
PASS
ok  	github.com/kiagnose/kubevirt-realtime-checkup/tests	91.391s