Fix timeout option

Change-Id: Ieb80cc1dfee5541fe9adcc0ad893111c3a6ca669
diff --git a/glusterfs/files/glusterfs-client.mount b/glusterfs/files/glusterfs-client.mount
index df1cd08..9df87d7 100644
--- a/glusterfs/files/glusterfs-client.mount
+++ b/glusterfs/files/glusterfs-client.mount
@@ -7,7 +7,7 @@
 Where={{ path }}
 Type=glusterfs
 Options={{ options }}
-Timeout={{ timeout|default(300) }}
+TimeoutSec={{ timeout|default(300) }}
 
 [Install]
 WantedBy=multi-user.target