chore: Disable storage spec type validation (kubeflow#2285)

Due to differences in storage provider support between the
KServe storage initializer and ModelMesh puller, this commit
disables the storage spec type validation. With this enabled,
Isvcs on ModelMesh trying to use the new storage spec with azure or gcs
providers will be blocked by KServe's validation webhook. This
check could potentially be re-enabled once gs/azure storage spec
support is provided in the storage initializer.

Signed-off-by: Paul Van Eck <pvaneck@us.ibm.com>

pkg/apis/serving/v1beta1/predictor.go

@@ -139,7 +139,9 @@ func (s *PredictorSpec) GetExtensions() *ComponentExtensionSpec {
 func (p *PredictorExtensionSpec) Validate() error {
 	return utils.FirstNonNilError([]error{
 		validateStorageURI(p.GetStorageUri()),
-		validateStorageSpec(p.GetStorageSpec(), p.GetStorageUri()),
+		// TODO: Re-enable storage spec validation once azure/gcs are supported.
+		// Enabling this currently prevents those storage types from working with ModelMesh.
+		// validateStorageSpec(p.GetStorageSpec(), p.GetStorageUri()),
 	})
 }