[ISSUE-1076] Fixing return error code for SearchPartName

[Andrzej-Zukowski]

Purpose

Resolves #1077

Fix for error code returned in case of partition UUID not present on block device

PR checklist

• [ ] Add link to the issue
• [ ] Choose Project
• [ ] Choose PR label
• [ ] New unit tests added
• [ ] Modified code has meaningful comments
• [ ] All TODOs are linked with the issues
• [ ] All comments are resolved

Testing

Provide test details

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (f45d675) 72.76% compared to head (e1a9a9f) 72.84%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1079 +/- ## ========================================== + Coverage 72.76% 72.84% +0.07% ========================================== Files 63 63 Lines 8949 8949 ========================================== + Hits 6512 6519 +7 + Misses 2147 2142 -5 + Partials 290 288 -2 ``` | [Flag](https://app.codecov.io/gh/dell/csi-baremetal/pull/1079/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dell) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/dell/csi-baremetal/pull/1079/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dell) | `72.84% <100.00%> (+0.07%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dell#carryforward-flags-in-the-pull-request-comment) to find out more.

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