skip delete disk partition event when GPTBasedUUID is disable

[liuminjian]

Pull Request template

Why is this PR required? What issue does it fix?:

I have a situation，GPTBasedUUID feature is disable，i use the block device by local pv and i partition the disk. the block device will be set inactived when receive a event for partition remove, because the disk and the disk partition have the same block device uuid which generate by ID_WWN ID_VENDOR ID_MODEL ID_SERIAL. so it should skip delete disk partition event when GPTBasedUUID is disable.

What this PR does?:

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[liuminjian]

[codecov-commenter]

Codecov Report

Merging #639 (87735c9) into develop (6745dcf) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop     #639      +/-   ##
===========================================
- Coverage    46.93%   46.89%   -0.04%     
===========================================
  Files           78       78              
  Lines         3814     3817       +3     
===========================================
  Hits          1790     1790              
- Misses        1866     1869       +3     
  Partials       158      158              

Impacted Files	Coverage Δ
cmd/ndm_daemonset/probe/eventhandler.go	37.33% <0.00%> (-1.56%)	⬇️

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[akhilerm]

Seeing a change in the default disabled feature gate, I am thinking if the legacy method of disk identification is still used?? Are there any use cases for which you need the legacy method?

[akhilerm]

@liuminjian Can you separate the changes for adding zpool label into a different PR.

The changes in the skipping delete partition event are good.

[akhilerm]

@liuminjian Given one more comment

[liuminjian]

OK，i separate the changes for adding zpool label into a different PR

[akhilerm]

LGTM. Thanks @liuminjian for fixing this.

[akhilerm]

@liuminjian Can you also add a changelog as mentioned here

[z0marlin]

LGTM. Thanks for fixing this @liuminjian

[akhilerm]

LGTM