cleanup codebase and run gofmt

[beautytiger]

This PR is a

• Feature Implementation
• Bug Fix
• Documentation

What this PR does / why we need it:
Cleanup codebase

Which issue(s) this PR fixes

Fixes #

Please leave this checklist in the PR comment so that maintainers can ensure a good PR.

Merge Checklist:

• New feature
  • Tests
  • Documentation
• SVCat CLI flag
• Server Flag for config
  • Chart changes
  • removing a flag by marking deprecated and hiding to avoid
    breaking the chart release and existing clients who provide a
    flag that will get an error when they try to update

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[k8s-ci-robot]

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[mszostok]

/ok-to-test

[mszostok]

Hi @beautytiger, thanks for the PR :)

but what kind of checks did you execute to perform such changes?
from

var service map[string]interface{}
service = services[0].(map[string]interface{})

to

var service = services[0].(map[string]interface{})

if it's automated then maybe we will consider to add it to our pipeline

[beautytiger]

@mszostok
Oh, I manually run staticcheck.
Thanks.

[mszostok]

Thanks @beautytiger
I also created issue for cleaning up our verify stage: #2732

if you are interested then I can assist you with that:)

/lgtm

[mszostok]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: beautytiger, mszostok

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