PWX-34256: node-wiper fix for custom-dir installs

[zoxpx]

Adding custom user-volumes to the node-wiper spec

What this PR does / why we need it:

The portworx-install can be customized using user-volumes

• i.e. /opt/pwx -> /usr/local/portworx by adding spec.Volume -override

  kind: StorageCluster
  apiVersion: core.libopenstorage.org/v1
  spec:
    volumes:
    - name: custom-opt
      mountPath: /opt/pwx
      hostPath:
        path: /usr/local/portworx

However, in such customized installs, for the cleanup to work correctly, we have to provide the same custom user-volumes to the node-wiper image

• note, the new node-wiper is smart enough to detect the install-dir overrides, and can perform the cleanup/wipe correctly -- but it'll need the correct user-volumes setup

Which issue(s) this PR fixes (optional)
Closes # PWX-34256

Special notes for your reviewer:

Note, the customized px-install (/opt/pwx -> /usr/local/portworx) is being node-wiped correctly after this fix.

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (6b13199) 75.75% compared to head (ab75812) 75.76%.

Files	Patch %	Lines
drivers/storage/portworx/util/util.go	86.36%	1 Missing and 2 partials ⚠️
drivers/storage/portworx/uninstall.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1388   +/-   ##
=======================================
  Coverage   75.75%   75.76%           
=======================================
  Files          66       66           
  Lines       18723    18746   +23     
=======================================
+ Hits        14183    14202   +19     
- Misses       3531     3533    +2     
- Partials     1009     1011    +2     

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[zoxpx]

Thanks Piyush -- merging this PR, will cherry-pick to px-rel-23.10.2 via separate PR.