test: Add Error Log Exceptions

Occasionally the cilium-operator will run into a transient issue
where it cannot get/update/release the leaselock with K8s that
it uses to adjudicate its leader election. This error message
is part and parcel of this failure and can be ignored.

cf. #16402

Signed-off-by: Nate Sweet <nathanjsweet@pm.me>

test/helpers/cons.go

@@ -232,13 +232,14 @@ const (
 	missingIptablesWait = "Missing iptables wait arg (-w):"
 
 	// ...and their exceptions.
-	lrpExists          = "local-redirect service exists for frontend"                         // cf. https://github.com/cilium/cilium/issues/16400
-	opCantBeFulfilled  = "Operation cannot be fulfilled on leases.coordination.k8s.io"        // cf. https://github.com/cilium/cilium/issues/16402
-	initLeaderElection = "error initially creating leader election record: leases."           // cf. https://github.com/cilium/cilium/issues/16402#issuecomment-861544964
-	globalDataSupport  = "kernel doesn't support global data"                                 // cf. https://github.com/cilium/cilium/issues/16418
-	removeInexistentID = "removing identity not added to the identity manager!"               // cf. https://github.com/cilium/cilium/issues/16419
-	failedToListCRDs   = "the server could not find the requested resource"                   // cf. https://github.com/cilium/cilium/issues/16425
-	retrieveResLock    = "retrieving resource lock kube-system/cilium-operator-resource-lock" // cf. https://github.com/cilium/cilium/issues/16402#issuecomment-871155492
+	lrpExists                = "local-redirect service exists for frontend"                         // cf. https://github.com/cilium/cilium/issues/16400
+	opCantBeFulfilled        = "Operation cannot be fulfilled on leases.coordination.k8s.io"        // cf. https://github.com/cilium/cilium/issues/16402
+	initLeaderElection       = "error initially creating leader election record: leases."           // cf. https://github.com/cilium/cilium/issues/16402#issuecomment-861544964
+	globalDataSupport        = "kernel doesn't support global data"                                 // cf. https://github.com/cilium/cilium/issues/16418
+	removeInexistentID       = "removing identity not added to the identity manager!"               // cf. https://github.com/cilium/cilium/issues/16419
+	failedToListCRDs         = "the server could not find the requested resource"                   // cf. https://github.com/cilium/cilium/issues/16425
+	retrieveResLock          = "retrieving resource lock kube-system/cilium-operator-resource-lock" // cf. https://github.com/cilium/cilium/issues/16402#issuecomment-871155492
+	failedToRelLockEmptyName = "Failed to release lock: resource name may not be empty"             // cf. https://github.com/cilium/cilium/issues/16402#issuecomment-985819560
 
 	// HelmTemplate is the location of the Helm templates to install Cilium
 	HelmTemplate = "../install/kubernetes/cilium"
@@ -304,7 +305,7 @@ var badLogMessages = map[string][]string{
 	"DATA RACE":         nil,
 	// Exceptions for level=error should only be added as a last resort, if the
 	// error cannot be fixed in Cilium or in the test.
-	"level=error": {lrpExists, opCantBeFulfilled, initLeaderElection, globalDataSupport, removeInexistentID, failedToListCRDs, retrieveResLock},
+	"level=error": {lrpExists, opCantBeFulfilled, initLeaderElection, globalDataSupport, removeInexistentID, failedToListCRDs, retrieveResLock, failedToRelLockEmptyName},
 }
 
 var ciliumCLICommands = map[string]string{