Improve test stability in CI environments #7189

Job	Run time
e2e-fleet-test-k3s-new-default	10m 12s
e2e-fleet-test-k3s-new-infra-setup-helm	6m 23s
e2e-fleet-test-k3s-new-sharding	5m 16s
e2e-fleet-test-k3s-new-metrics	12m 11s
e2e-fleet-test-k3s-new-infra-setup-git	16m 12s
e2e-fleet-test-k3s-new-infra-setup-oci	13m 44s
e2e-fleet-test-k3s-old-infra-setup-git	15m 44s
e2e-fleet-test-k3s-old-metrics	11m 29s
e2e-fleet-test-k3s-old-default	10m 21s
e2e-fleet-test-k3s-old-infra-setup-oci	13m 42s
e2e-fleet-test-k3s-old-sharded-metrics	11m 20s
e2e-fleet-test-k3s-old-sharding	5m 2s
e2e-fleet-test-k3s-new-sharded-metrics	11m 44s
e2e-fleet-test-k3s-old-infra-setup-helm	6m 11s
	2h 29m 31s

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