fix golint issues

cmd/mytoken-server/main.go

internal/config/config.go

internal/db/cluster/cluster.go

internal/db/db.go

internal/db/dbrepo/accesstokenrepo/accessToken.go

internal/db/dbrepo/authcodeinforepo/state/consentcode.go

internal/db/dbrepo/authcodeinforepo/state/state.go

internal/db/dbrepo/cryptstore/cryptstore.go

internal/db/dbrepo/encryptionkeyrepo/encryptionkeyRepo.go

internal/db/dbrepo/mytokenrepo/mytoken.go

internal/db/dbrepo/mytokenrepo/mytokenrepohelper/helpers.go

...rnal/db/dbrepo/mytokenrepo/transfercoderepo/proxytoken.go

internal/db/dbrepo/sshrepo/sshrepo.go

internal/endpoints/consent/consent.go

internal/endpoints/redirect/redirectEndpoint.go

internal/endpoints/settings/grants/ssh/ssh.go

internal/endpoints/settings/settings.go

internal/endpoints/token/access/accessTokenEndpoint.go

internal/endpoints/token/mytoken/mytokenEndpoint.go

internal/endpoints/token/mytoken/polling/pollingEndpoint.go