Add custom upgrade option to ClusterctlUpgradeSpec

test/e2e/clusterctl_upgrade.go

@@ -84,6 +84,11 @@ type ClusterctlUpgradeSpecInput struct {
 	MgmtFlavor          string
 	CNIManifestPath     string
 	WorkloadFlavor      string
+	// Custom providers can be specified to upgrade to a pre-release or a custom version instead of upgrading to the latest using contact
+	CoreProvider            string
+	BootstrapProviders      []string
+	ControlPlaneProviders   []string
+	InfrastructureProviders []string
 }
 
 // ClusterctlUpgradeSpec implements a test that verifies clusterctl upgrade of a management cluster.
@@ -343,13 +348,17 @@ func ClusterctlUpgradeSpec(ctx context.Context, inputGetter func() ClusterctlUpg
 		)
 		Expect(err).NotTo(HaveOccurred())
 
-		By("Upgrading providers to the latest version available")
+		By("Upgrading providers to the latest version available using contract or to custom providers version if specified")
 		clusterctl.UpgradeManagementClusterAndWait(ctx, clusterctl.UpgradeManagementClusterAndWaitInput{
-			ClusterctlConfigPath: input.ClusterctlConfigPath,
-			ClusterctlVariables:  input.UpgradeClusterctlVariables,
-			ClusterProxy:         managementClusterProxy,
-			Contract:             clusterv1.GroupVersion.Version,
-			LogFolder:            filepath.Join(input.ArtifactFolder, "clusters", cluster.Name),
+			ClusterctlConfigPath:    input.ClusterctlConfigPath,
+			ClusterctlVariables:     input.UpgradeClusterctlVariables,
+			ClusterProxy:            managementClusterProxy,
+			Contract:                clusterv1.GroupVersion.Version,
+			CoreProvider:            input.CoreProvider,
+			BootstrapProviders:      input.BootstrapProviders,
+			ControlPlaneProviders:   input.ControlPlaneProviders,
+			InfrastructureProviders: input.InfrastructureProviders,
+			LogFolder:               filepath.Join(input.ArtifactFolder, "clusters", cluster.Name),
 		}, input.E2EConfig.GetIntervals(specName, "wait-controllers")...)
 
 		By("THE MANAGEMENT CLUSTER WAS SUCCESSFULLY UPGRADED!")