Dashboards: Add Dashboard Schema validation (2) (#103844)

* Activate schema validation and align underlying systems

* update to save as v0 if not the right schema version

* Resolve merge conflicts

* Move RequireApiErrorStatus to tests package

* Add mutation tests

* Fix lint

* Only do min version check if dashboard is v1

* Fix lint and disable provisioning test

* Revert provisioning changes

* Revert more tests and add schema test

* Reran gen

* SQL Dashboard save

* Adjust APIVERSION

* Fixed mutation test

* Add logging on downgrade

---------

Co-authored-by: Marco de Abreu <18629099+marcoabreu@users.noreply.github.com>
Co-authored-by: Stephanie Hingtgen <stephanie.hingtgen@grafana.com>

pkg/tests/apis/helper.go

@@ -28,6 +28,7 @@ import (
 	"k8s.io/client-go/rest"
 
 	"github.com/grafana/grafana/pkg/apimachinery/identity"
+	"github.com/grafana/grafana/pkg/apimachinery/utils"
 	"github.com/grafana/grafana/pkg/infra/localcache"
 	"github.com/grafana/grafana/pkg/infra/tracing"
 	"github.com/grafana/grafana/pkg/server"
@@ -894,3 +895,22 @@ func (c *K8sTestHelper) DeleteServiceAccount(user User, orgID int64, saID int64)
 
 	require.Equal(c.t, http.StatusOK, resp.Response.StatusCode, "failed to delete service account, body: %s", string(resp.Body))
 }
+
+// Ensures that the passed error is an APIStatus error and fails the test if it is not.
+func (c *K8sTestHelper) RequireApiErrorStatus(err error, reason metav1.StatusReason, httpCode int) metav1.Status {
+	require.Error(c.t, err)
+	status, ok := utils.ExtractApiErrorStatus(err)
+	if !ok {
+		c.t.Fatalf("Expected error to be an APIStatus, but got %T", err)
+	}
+
+	if reason != metav1.StatusReasonUnknown {
+		require.Equal(c.t, status.Reason, reason)
+	}
+
+	if httpCode != 0 {
+		require.Equal(c.t, status.Code, int32(httpCode))
+	}
+
+	return status
+}