[go-nuts] extract Last 2 characters in go template

[Pawan Kumar]

Hi Team,

I was using slice function to extract last 2 characters in go template but 
not able to do ,as -ve range is not supported by slice function .

For example -  My cluster name is   turbo-ab-03 , i can extract if i know 
exact length of cluster name. 

{{ slice (index .ServiceMeta "cluster_name") 9 11}}
Results -    03 

But it fails , if i use negative range ( Want to extract last 2 characters)

{{ slice (index .ServiceMeta "cluster_name") -1 2}}

kindly help.

thanks 

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