Add stylecheck, unused and gosimple linters
This commits enables the above mentioned linters. No further code
changes are needed due to test passing on `make lint`.
@@ -15,6 +15,7 @@ linters:
- goimports
- golint
- gosec
+ - gosimple
- govet
- ineffassign
- interfacer
@@ -24,9 +25,11 @@ linters:
- scopelint
- staticcheck
- structcheck
+ - stylecheck
- typecheck
- unconvert
- unparam
+ - unused
- varcheck
# - errcheck
# - gochecknoglobals
