core: fail if config dir creation fails

If the operator fails to create the operator's configuration directory
then we should fail the Operator.

Signed-off-by: Sébastien Han <seb@redhat.com>
(cherry picked from commit 10a114a)

pkg/daemon/ceph/client/config.go

@@ -115,7 +115,7 @@ func generateConfigFile(context *clusterd.Context, clusterInfo *ClusterInfo, pat
 
 	// create the config directory
 	if err := os.MkdirAll(pathRoot, 0744); err != nil {
-		logger.Warningf("failed to create config directory at %q. %v", pathRoot, err)
+		return "", errors.Wrapf(err, "failed to create config directory at %q", pathRoot)
 	}
 
 	configFile, err := createGlobalConfigFileSection(context, clusterInfo, globalConfig)