TestAutoscaleVerifyMaintenanceMode is flaky

Error

expected autoscale size to be 0, but got 2

Stacktrace

goroutine 2564 [running]:runtime/debug.Stack(0x1e33be5, 0x34692c0, 0xc000c5da20)	/var/lib/jenkins/workspace/couchbase-operator-continuous-integration/go/src/runtime/debug/stack.go:24 +0xabgithub.com/couchbase/couchbase-operator/test/e2e/e2eutil.Die(0xc000a7c600, 0x34692c0, 0xc000715990)	/var/lib/jenkins/workspace/couchbase-operator-continuous-integration/test/e2e/e2eutil/util.go:1277 +0x34github.com/couchbase/couchbase-operator/test/e2e/e2eutil.MustValidateAutoscalerSize(0xc000a7c600, 0xc0008242a0, 0xc000049320, 0xa, 0xc00097cfc0, 0x1c, 0x0)	/var/lib/jenkins/workspace/couchbase-operator-continuous-integration/test/e2e/e2eutil/autoscale_util.go:253 +0x185github.com/couchbase/couchbase-operator/test/e2e.TestAutoscaleVerifyMaintenanceMode(0xc000a7c600)	/var/lib/jenkins/workspace/couchbase-operator-continuous-integration/test/e2e/autoscale_test.go:509 +0xf1etesting.tRunner(0xc000a7c600, 0x2a72e10)	/var/lib/jenkins/workspace/couchbase-operator-continuous-integration/go/src/testing/testing.go:1193 +0x203created by testing.(*T).Run	/var/lib/jenkins/workspace/couchbase-operator-continuous-integration/go/src/testing/testing.go:1238 +0x5d8