fix build

executor/go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/google/uuid v1.1.2
 	github.com/gorilla/mux v1.8.0
 	github.com/grpc-ecosystem/go-grpc-middleware v1.2.1
-	github.com/onsi/gomega v1.10.1
+	github.com/onsi/gomega v1.10.2
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.7.1
@@ -21,7 +21,7 @@ require (
 	github.com/uber/jaeger-client-go v2.25.0+incompatible
 	github.com/uber/jaeger-lib v2.2.0+incompatible // indirect
 	go.uber.org/zap v1.16.0
-	golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
 	google.golang.org/grpc v1.32.0
 	gotest.tools v2.2.0+incompatible
 	k8s.io/api v0.18.8
@@ -32,3 +32,5 @@ require (
 replace github.com/tensorflow/tensorflow/tensorflow/go/core => ./proto/tensorflow/core
 
 replace github.com/seldonio/seldon-core/operator => ./_operator
+
+replace k8s.io/client-go => k8s.io/client-go v0.18.8