Sahdev P. Zala 40b66d1f18 Etcdctl: benchmark for hashkv performance
The benchmark as a sub command of put when provided will fetch hashkv and checks
the time taken to get it.

Fixed # 8910

Provider a way to etcd user to check how long it takes to get
hashkv in user enviornment. The command ouput will provide time taken
to get hashkv along with db file size.
2018-08-10 15:53:41 -04:00
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