Update etcd client to 3.2.24 for latest release

Signed-off-by: Timothy St. Clair <timothysc@gmail.com>

vendor/github.com/coreos/etcd/lease/lessor.go

@@ -35,15 +35,19 @@ const (
 	forever = monotime.Time(math.MaxInt64)
 )
 
+// MaxLeaseTTL is the maximum lease TTL value
+const MaxLeaseTTL = 9000000000
+
 var (
 	leaseBucketName = []byte("lease")
 
 	// maximum number of leases to revoke per second; configurable for tests
 	leaseRevokeRate = 1000
 
-	ErrNotPrimary    = errors.New("not a primary lessor")
-	ErrLeaseNotFound = errors.New("lease not found")
-	ErrLeaseExists   = errors.New("lease already exists")
+	ErrNotPrimary       = errors.New("not a primary lessor")
+	ErrLeaseNotFound    = errors.New("lease not found")
+	ErrLeaseExists      = errors.New("lease already exists")
+	ErrLeaseTTLTooLarge = errors.New("too large lease TTL")
 )
 
 // TxnDelete is a TxnWrite that only permits deletes. Defined here
@@ -199,6 +203,10 @@ func (le *lessor) Grant(id LeaseID, ttl int64) (*Lease, error) {
 		return nil, ErrLeaseNotFound
 	}
 
+	if ttl > MaxLeaseTTL {
+		return nil, ErrLeaseTTLTooLarge
+	}
+
 	// TODO: when lessor is under high load, it should give out lease
 	// with longer TTL to reduce renew load.
 	l := &Lease{