Add comprehensive test suite for Additional Storage Support feature

This adds API validation and E2E tests for the Additional Storage
Configurations feature (TechPreviewNoUpgrade):
- additionalArtifactStores (max 10 stores)
- additionalImageStores (max 10 stores)
- additionalLayerStores (max 5 stores, supports :ref suffix)
- Combined storage configurations
Test suite: openshift/additional-storage-support

Signed-off-by: Bhargavi Gudi <BhargaviGudi@users.noreply.github.com>

Add comprehensive test cases for Additional Storage Support feature

Signed-off-by: Bhargavi Gudi <BhargaviGudi@users.noreply.github.com>

Author: BhargaviGudi

pkg/testsuites/standard_suites.go

@@ -492,6 +492,21 @@ var staticSuites = []ginkgo.TestSuite{
 		Parallelism:                1,
 		ClusterStabilityDuringTest: ginkgo.Disruptive,
 	},
+	{
+		Name: "openshift/additional-storage-support",
+		Description: templates.LongDesc(`
+		This test suite validates the Additional Storage Support feature for CRI-O including
+		additionalImageStores, additionalLayerStores, and additionalArtifactStores functionality.
+		Requires TechPreviewNoUpgrade feature set to be enabled on the cluster.
+		Tests include E2E validation of storage configuration via ContainerRuntimeConfig and
+		API validation tests for path format restrictions, count limits, and uniqueness constraints.
+		`),
+		Qualifiers: []string{
+			`name.contains("[Suite:openshift/additional-storage-support")`,
+		},
+		TestTimeout: 40 * time.Minute,
+		Parallelism: 1,
+	},
 }
 
 func withExcludedTestsFilter(baseExpr string) string {