feat(blockdevice, core): add mpath to supported DM device types

[akhilerm]

Signed-off-by: Akhil Mohan akhil.mohan@mayadata.io

Why is this PR required? What issue does it fix?:
If mpath is not added to supported type, NDM will not use the DM_UUID to create a blockdevice UUID, resulting in device identification erroring out.

What this PR does?:

• add multipath device type to supported DM device types

Does this PR require any upgrade changes?:
No

If the changes in this PR are manually verified, list down the scenarios covered::

Any additional information for your reviewer? :
Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

• Fixes #
• PR Title follows the convention of <type>(<scope>): <subject>
• Has the change log section been updated?
• Commit has unit tests
• Commit has integration tests
• (Optional) Are upgrade changes included in this PR? If not, mention the issue/PR to track:
• (Optional) If documentation changes are required, which issue on https://github.com/openebs/openebs-docs is used to track them:

[codecov-io]

Codecov Report

Merging #530 (ddb2d8e) into master (5f87bea) will decrease coverage by 0.20%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #530      +/-   ##
==========================================
- Coverage   47.93%   47.72%   -0.21%     
==========================================
  Files          73       73              
  Lines        3363     3363              
==========================================
- Hits         1612     1605       -7     
- Misses       1588     1593       +5     
- Partials      163      165       +2     

Impacted Files	Coverage Δ
cmd/ndm_daemonset/probe/eventhandler.go	42.59% <0.00%> (-5.56%)	⬇️
cmd/ndm_daemonset/probe/udevprobe.go	52.51% <0.00%> (-2.24%)	⬇️

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