tests: samples: Resolve duplicates in names.

Several duplicates were found with
scripts/twister -T samples/ -T tests/ --dry-run --list-test-duplicates
This is an issue since duplicated names causes overwriting of
results. Most duplicates looked like obvious copy-pase errors.
New names where addopted looking at other tests in the same yaml
or looking at the directory/descriptio.

Signed-off-by: Maciej Perkowski <Maciej.Perkowski@nordicsemi.no>