Upgrade the spark-on-k8s-operator module

This upgrades the module to the spark-operator-chart-1.1.15 release.
https://github.com/GoogleCloudPlatform/spark-on-k8s-operator/commits/spark-operator-chart-1.1.15

go.mod

@@ -4,7 +4,7 @@ go 1.16
 
 require (
 	cloud.google.com/go v0.78.0 // indirect
-	github.com/GoogleCloudPlatform/spark-on-k8s-operator v0.0.0-20200723154620-6f35a1152625
+	github.com/GoogleCloudPlatform/spark-on-k8s-operator v0.0.0-20211202164748-537bab5683fc // spark-operator-chart-1.1.15
 	github.com/Masterminds/semver v1.5.0
 	github.com/adammck/venv v0.0.0-20200610172036-e77789703e7c // indirect
 	github.com/aws/amazon-sagemaker-operator-for-k8s v1.0.1-0.20210303003444-0fb33b1fd49d
@@ -49,4 +49,27 @@ require (
 	sigs.k8s.io/controller-runtime v0.8.2
 )
 
-replace github.com/aws/amazon-sagemaker-operator-for-k8s => github.com/aws/amazon-sagemaker-operator-for-k8s v1.0.1-0.20210303003444-0fb33b1fd49d
+replace (
+	github.com/aws/amazon-sagemaker-operator-for-k8s => github.com/aws/amazon-sagemaker-operator-for-k8s v1.0.1-0.20210303003444-0fb33b1fd49d
+	k8s.io/api => k8s.io/api v0.20.2
+	k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.20.2
+	k8s.io/apimachinery => k8s.io/apimachinery v0.20.2
+	k8s.io/apiserver => k8s.io/apiserver v0.20.2
+	k8s.io/cli-runtime => k8s.io/cli-runtime v0.20.2
+	k8s.io/client-go => k8s.io/client-go v0.20.2
+	k8s.io/cloud-provider => k8s.io/cloud-provider v0.20.2
+	k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.20.2
+	k8s.io/code-generator => k8s.io/code-generator v0.20.2
+	k8s.io/component-base => k8s.io/component-base v0.20.2
+	k8s.io/cri-api => k8s.io/cri-api v0.20.2
+	k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.20.2
+	k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.20.2
+	k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.20.2
+	k8s.io/kube-proxy => k8s.io/kube-proxy v0.20.2
+	k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.20.2
+	k8s.io/kubectl => k8s.io/kubectl v0.20.2
+	k8s.io/kubelet => k8s.io/kubelet v0.20.2
+	k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.20.2
+	k8s.io/metrics => k8s.io/metrics v0.20.2
+	k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.20.2
+)