[OpenCL][Testing] Fix shell dir definition
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For the most up to date status, view the checks section at the bottom of the pull request. Hi @alankelly Can you please review this PR ? Thank you! Hi @alankelly Can you please review this PR ? Thank you! Hi @alankelly Can you please review this PR ? Thank you! Hi @alankelly Can you please review this PR ? Thank you! Hi @impjdi Can you please review this PR ? Thank you! This will cause everyone to run `sed` unconditionally.  I would suggest to remove the `.` when you invoke it.  If we let this through, maybe next time someone creates a PR that accommodates `../../../../tensorflow/lite/delegates/gpu/cl/testing/run_performance_profiling.sh`... Hi @echuraev Can you please check @impjdi's [comments](https://github.com/tensorflow/tensorflow/pull/59640#issuecomment-1785571292) and keep us posted? Thank you! > Hi @echuraev Can you please check @impjdi's [comments](https://github.com/tensorflow/tensorflow/pull/59640#issuecomment-1785571292) and keep us posted? Thank you!

Hi, @gbaned. I saw this comment, and it looks like we can close this PR. Probably to fix this problem, scripts should work with absolute path instead of relative.
 > > Hi @echuraev Can you please check @impjdi's [comments](https://github.com/tensorflow/tensorflow/pull/59640#issuecomment-1785571292) and keep us posted? Thank you!
> 
> Hi, @gbaned. I saw this comment, and it looks like we can close this PR. Probably to fix this problem, scripts should work with absolute path instead of relative.

Hi @echuraev Thank you for the update. 
It was a problem when `run_performance_profiling.sh` was running with `./` in the beginning of the command, e.g.:
```
./tensorflow/lite/delegates/gpu/cl/testing/run_performance_profiling.sh -m ...
```

I got the following error:
```
ERROR: Skipping '//./tensorflow/lite/delegates/gpu/cl/testing:performance_profiling': invalid target format '//./tensorflow/lite/delegates/gpu/cl/testing:performance_profiling': invalid package name './tensorflow/lite/delegates/gpu/cl/testing': package name component contains only '.' characters
```

The same situation was mentioned here:
https://github.com/tensorflow/tensorflow/issues/56463#issuecomment-1185389950

This PR fixes this issue.