cluster-api: change temporary directory path

Changes the temporary directory where clusterapi dependencies
are unpacked from
<clusterdir>/bin/cluster-api
to
<clusterdir>/cluster-api

The clusterapi teardown function only removes the cluster-api dir,
so we are leaking the bin dir. There are other ways we could resolve
this issue, but ultimately we don't need to create a nested temporary
directory.

Author: patrickdillon

pkg/clusterapi/localcontrolplane.go

@@ -60,7 +60,7 @@ type localControlPlane struct {
 // Run launches the local control plane.
 func (c *localControlPlane) Run(ctx context.Context) error {
 	// Create a temporary directory to unpack the cluster-api binaries.
-	c.BinDir = filepath.Join(command.RootOpts.Dir, "bin", "cluster-api")
+	c.BinDir = filepath.Join(command.RootOpts.Dir, "cluster-api")
 	if err := UnpackClusterAPIBinary(c.BinDir); err != nil {
 		return fmt.Errorf("failed to unpack cluster-api binary: %w", err)
 	}