Upgrade operator version we test with

Signed-off-by: Matt Lord <mattalord@gmail.com>

Author: mattlord

test/endtoend/operator/operator.yaml

@@ -7820,7 +7820,7 @@ spec:
                   fieldPath: metadata.name
             - name: OPERATOR_NAME
               value: vitess-operator
-          image: planetscale/vitess-operator:v2.16.0-rc1
+          image: planetscale/vitess-operator:v2.17.0-rc1
           name: vitess-operator
           resources:
             limits: