if tc.envPilotSampling != 0.0 {
				test.SetForTest(t, &features.TraceSampling, tc.envPilotSampling)
			}

			m := mesh.DefaultMeshConfig()
			m.ProxyHttpPort = 15007
			m.EnableTracing = true
			m.DefaultConfig = &meshconfig.ProxyConfig{
				Tracing: &meshconfig.Tracing{
					CustomTags:       tc.in.CustomTags,
					MaxPathTagLength: tc.in.MaxPathTagLength,

STORAGE_BACKEND=${STORAGE_BACKEND:-"etcd3"}
STORAGE_MEDIA_TYPE=${STORAGE_MEDIA_TYPE:-"application/vnd.kubernetes.protobuf"}
# preserve etcd data. you also need to set ETCD_DIR.
PRESERVE_ETCD="${PRESERVE_ETCD:-false}"
ENABLE_TRACING=${ENABLE_TRACING:-false}

# enable Kubernetes-CSI snapshotter
ENABLE_CSI_SNAPSHOTTER=${ENABLE_CSI_SNAPSHOTTER:-false}

KUBECONFIG_TOKEN=${KUBECONFIG_TOKEN:-""}
AUTH_ARGS=${AUTH_ARGS:-""}