Fix hugepages mount user rights

Enable access for all users.

Change-Id: I8a2b4fd81ead14f690fc2ea0c252b811a89ed417

linux/system/hugepages.sls

@@ -24,7 +24,7 @@ hugepages_mount_{{ hugepages_type }}:
     - device: Hugetlbfs-kvm
     - fstype: hugetlbfs
     - mkmnt: true
-    - opts: mode=775,pagesize={{ hugepages.size }}
+    - opts: mode=777,pagesize={{ hugepages.size }}
 
 {%- endif %}