Change quota_injected_file_path_bytes to quota_injected_file_path_length

'quota_injected_file_path_bytes' has been renamed to
'quota_injected_file_path_length' long time ago, this patch fixes this
issue in devstack.

Change-Id: I5d3c52c5ded5321435d2d395b682c4c0725279a7
diff --git a/lib/nova_plugins/hypervisor-fake b/lib/nova_plugins/hypervisor-fake
index 6ac2199..f9b95c1 100644
--- a/lib/nova_plugins/hypervisor-fake
+++ b/lib/nova_plugins/hypervisor-fake
@@ -45,7 +45,7 @@
     iniset $NOVA_CONF DEFAULT quota_fixed_ips -1
     iniset $NOVA_CONF DEFAULT quota_metadata_items -1
     iniset $NOVA_CONF DEFAULT quota_injected_files -1
-    iniset $NOVA_CONF DEFAULT quota_injected_file_path_bytes -1
+    iniset $NOVA_CONF DEFAULT quota_injected_file_path_length -1
     iniset $NOVA_CONF DEFAULT quota_security_groups -1
     iniset $NOVA_CONF DEFAULT quota_security_group_rules -1
     iniset $NOVA_CONF DEFAULT quota_key_pairs -1