MM-52532: Fix golangci warnings (#23709)

https://mattermost.atlassian.net/browse/MM-52532

- Replace golint with revive
- Add makezero linter
- Fix all the required linter failures

Some issues in enterprise and public modules
are yet to be fixed. We send this to expediate things.

server/platform/services/httpservice/client.go

@@ -89,7 +89,7 @@ func init() {
 
 type DialContextFunction func(ctx context.Context, network, addr string) (net.Conn, error)
 
-var AddressForbidden error = errors.New("address forbidden, you may need to set AllowedUntrustedInternalConnections to allow an integration access to your internal network")
+var AddressForbidden = errors.New("address forbidden, you may need to set AllowedUntrustedInternalConnections to allow an integration access to your internal network")
 
 func dialContextFilter(dial DialContextFunction, allowHost func(host string) bool, allowIP func(ip net.IP) bool) DialContextFunction {
 	return func(ctx context.Context, network, addr string) (net.Conn, error) {