Merge pull request #122 from Matias-Barrios/reuse_connection

[Enhance] Reuse http client connections

Update dependencies of stastd client

Update dependencies of hystrix-go

Moving dependency from gojektech to gojek

Expose hystrix metrics to StatsD collector

fix backoff calculations in exponential strategy

support for go.mod

Merge pull request #40 from gojek/plugins

Add plugin support

Fixes bug in passing timeout for hystrix

Fix request close bug