NSFS on syscall error should log the operation info and not just the error code (even if debug level is low)

[guymguym]

Environment info

• NooBaa Version: 5.15.3
• Platform: rhel

Actual behavior

1. on syscall error we only see the err code unless we turn on higher debug log -

May 21 16:19:48 host node[2941584]: May-21 16:19:48.654 [nsfs/2941584] [ERROR] core.sdk.namespace_fs::  [Error: Operation not permitted] { code: 'EPERM' }

Expected behavior

1. Should log the operation info with the error code.

Steps to reproduce

1. Change fs permissions to cause EPERM.