Update local-path-provisioner helper script

[brandond]

Proposed Changes

Syncs helper script with upstream: https://github.com/rancher/local-path-provisioner/blob/cf3be50b7f49c0dc40e7b6e4ff3c2dbb4f4830f9/deploy/local-path-storage.yaml#L137-L144

Types of Changes

bugfix / nit

Verification

See linked issue

Testing

Linked Issues

• local path provisioner helper script does not support -a flag #9950
• Volumes stuck in Released state #9833

User-Facing Change

Further Comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.53%. Comparing base (81cd630) to head (87bf9bc).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9964      +/-   ##
==========================================
- Coverage   49.63%   43.53%   -6.11%     
==========================================
  Files         158      158              
  Lines       14017    14017              
==========================================
- Hits         6958     6102     -856     
- Misses       5755     6750     +995     
+ Partials     1304     1165     -139     

Flag	Coverage Δ
e2etests	35.91% <ø> (-10.23%)	⬇️
inttests	37.07% <ø> (+0.01%)	⬆️
unittests	16.56% <ø> (ø)

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