
##### SUMMARY
NVMe devices can have their serial number read by reading (eg) /sys/block/nvme1n1/device/serial, without having to try and run sg_inq, which requires root.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
Facts collection, linux.py

##### ANSIBLE VERSION
```paste below
$ ansible --version
ansible 2.10.0.dev0
  config file = None
  configured module search path = ['/local/apps/egsadmin/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /local/apps/egsadmin/randy/ansible-src-current/lib/ansible
  executable location = /local/apps/egsadmin/randy/ansible-src-current/bin/ansible
  python version = 3.6.8 (default, Jun 11 2019, 15:15:01) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)]

```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```paste below
$ ansible-config dump --only-changed
<nothing>
```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->
AWS NVMe-based systems

##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->
Run setup task with and without "become" on a system or VM with NVMe and observe that "serial" only appears with "become"

<!--- HINT: You can paste gist.github.com links for larger files -->

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
ansible_devices[*].serial is populated for NVMe, regardless of become

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->
ansible_devices[*].serial is populated for NVMe, regardless of become

mounts = []
        
        bind_mounts = self._find_bind_mounts()
        uuids = self._lsblk_uuid()
        mtab_entries = self._mtab_entries()
        
        results = {}
        pool = ThreadPool(processes=min(len(mtab_entries), cpu_count()))
        maxtime = globals().get('GATHER_TIMEOUT') or timeout.DEFAULT_GATHER_TIMEOUT
        for fields in mtab_entries:
            
            fields = [self._replace_octal_escapes(field) for field in fields]
            device, mount, fstype, options = fields[0], fields[1], fields[2], fields[3]
            if not device.startswith(('/', '\\')) and ':/' not in device or fstype == 'none':
                continue
            mount_info = {'mount': mount,
                          'device': device,
                          'fstype': fstype,
                          'options': options}
            if mount in bind_mounts:
                
                if not self.MTAB_BIND_MOUNT_RE.match(options):
                    mount_info['options'] += ",bind"
            results[mount] = {'info': mount_info,
                              'extra': pool.apply_async(self.get_mount_info, (mount, device, uuids)),