CI enablement and e2e test execution on release branches (e.g. 0.17, 0.16 and 0.15) lead to failure

[swatisehgal]

During the process of branckporting changes like #280 to release-0.17, release-0.16 and release-0.15 and enabling CI for the corresponding branches, it was noticed that the jobs are failing perhaps due to issues that are unrelated to the backports and thus need investigation and fixing.

[ffromani]

This is because RTE is crashing with a stacktrace like this:

 github.com/k8stopologyawareschedwg/resource-topology-exporter/pkg/resourcemonitor.(*resourceMonitor).updateNodeResources(0xc0003d1110)
	/home/runner/work/resource-topology-exporter/resource-topology-exporter/pkg/resourcemonitor/resourcemonitor.go:433 +0x285
github.com/k8stopologyawareschedwg/resource-topology-exporter/pkg/resourcemonitor.NewResourceMonitor({{0x1e79480?, 0xc000375cb0?}, {0x1e9c4d0?, 0xc000007d40?}}, {{0x0, 0x0}, {0x7ffd86fc1ccd, 0x9}, 0x0, 0x1, ...}, ...)
	/home/runner/work/resource-topology-exporter/resource-topology-exporter/pkg/resourcemonitor/resourcemonitor.go:192 +0x4be
github.com/k8stopologyawareschedwg/resource-topology-exporter/pkg/resourcetopologyexporter.NewResourceObserver({{0x1e79480?, 0xc000375cb0?}, {0x1e9c4d0?, 0xc000007d40?}}, {{0x0, 0x0}, {0x7ffd86fc1ccd, 0x9}, 0x0, 0x1, ...})
	/home/runner/work/resource-topology-exporter/resource-topology-exporter/pkg/resourcetopologyexporter/resourceobserver.go:28 +0x88
github.com/k8stopologyawareschedwg/resource-topology-exporter/pkg/resourcetopologyexporter.Execute({{{_, _}, {_, _}}, {_, _}}, {0x0, 0x0, {0xc00005800a, 0xb}, ...}, ...)
	/home/runner/work/resource-topology-exporter/resource-topology-exporter/pkg/resourcetopologyexporter/resourcetopologyexporter.go:102 +0x23b
main.main()
	/home/runner/work/resource-topology-exporter/resource-topology-exporter/cmd/resource-topology-exporter/main.go:102 +0x107e