Adding the ability to run a getNasHeadeIp scrip tthat will fidn the IP of the GlusterFS Head running in the local VPC and
The IP is added to the values.yml file and later inserted in the config file
updatign the old getGlusterNAsHeadIP.py file to include new options:
Added tags for vpc , filesystem type and the config tag name to be replaced.
Not we can use this code to look for other NasHeads IPs and limit search to local VPC