fix: compatible with k8s 1.16 api

tekton/templates/controller.yaml

@@ -11,12 +11,15 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: {{ template "tekton.name" . }}-controller
 spec:
   replicas: 1
+  selector:
+    matchLabels:
+      app: {{ template "tekton.name" . }}-controller
   template:
     metadata:
       labels:

tekton/templates/webhook.yaml

@@ -13,12 +13,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-apiVersion: apps/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: {{ template "tekton.name" . }}-webhook
 spec:
   replicas: 1
+  selector:
+    matchLabels:
+      app: {{ template "tekton.name" . }}-webhook
   template:
     metadata:
       labels: