v2.3.0

Store all the executable main packages in cmd folder. (#335, @miry)
Extract common test helpers to own files. (#336, @miry)
Client: Allow HTTPS endpoints. (#338, @chen-anders)
client.Populate assign client to proxy. (#291, @hellodudu)
fix: The release-test task is always success. add: Allow to run release-test on arm machines. (#340, @miry)
Upgrade goreleaser. Support armv7 and armv6 oses. (#339, @mitchellrj)
Allow to change log level for server. (#346, @miry)

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