Added permissions to the instance Role ( CreateTags  ,DescribeTags ) so it can later on as it initialize set Tags:
Name ( rom withing the instance )
ApplicationRole ( to indicate this is a NAS Head )
FSType ( to indicate this is a GlusterFS system )
These channges will be implemented in the cfn-setup-gluster.sh file

Future implementation will allow the application search for NASHead applicatinon and mount them.
Added Tagging from within the script :
Changing Instance name ( could not do that from the cloud formation script as this is one of several AutoScale Group )
Added ApplicationRole Tag ( NasHead )
Added FSType ( Glusterfs )
Added MountVolume ( glusterfs )