Bugfix 1447 clean wwids file

[AkshaySainiDell]

Description

Gobrick executes the following set of commands for removing a multipath device:

multipath -f /dev/dm-2
echo 1 > /sys/class/block/sdf/device/delete
multipathd del path /dev/sdf

These commands do not remove entries from the /etc/multipath/wwids file, resulting in stale entries being left behind. The growing count of entries could potentially impact the performance of multipath if the file becomes exceptionally large.

To address this issue, Gobrick should be enhanced to remove a device from the wwids file using below command:

multipath -w mpathX (or WWID)

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#1447

Checklist:

• I have performed a self-review of my own code to ensure there are no formatting, vetting, linting, or security issues
• I have verified that new and existing unit tests pass locally with my changes
• I have not allowed coverage numbers to degenerate
• I have maintained at least 90% code coverage
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• Backward compatibility is not broken

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration

• Executed UT
  
• Installed the fix with unity driver and validated that the wwids are getting removed from the /etc/multipath/wwids file
  
  
  
• Installed the fix with powerstore driver and validated that the wwids are getting removed from the /etc/multipath/wwids file