[CPDEV-98324] Disable package automatic discovery of setuptools

[ilia1243]

Description

• If Kubemarine is run from sources and dump/ directory is created, attempt to build the package fails with
  Multiple top-level packages discovered in a flat-layout: ['dump', 'kubemarine']

Solution

• Disable package automatic discovery by explicitly specifying where to search the packages in.

Test Cases

TestCase 1

Steps:

1. Run Kubemarine from sources
2. Install package from sources using pip install .

Results:

Before	After
Multiple top-level packages discovered in a flat-layout: ['dump', 'kubemarine']	Package is built successfully

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Integration CI passed
• Unit tests. If Yes list of new/changed tests with brief description
• There is no merge conflicts