Enh: Include pivot/walk info in path, resolves SYN-7716

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 98.23009% with 2 lines in your changes missing coverage. Please review.

Project coverage is 96.27%. Comparing base (ff76600) to head (781b820). Report is 1 commits behind head on master.

Files	Patch %	Lines
synapse/lib/snap.py	86.66%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #3862 +/- ## ========================================== - Coverage 96.36% 96.27% -0.10% ========================================== Files 244 244 Lines 54650 54698 +48 ========================================== - Hits 52665 52661 -4 - Misses 1985 2037 +52 ``` | [Flag](https://app.codecov.io/gh/vertexproject/synapse/pull/3862/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=vertexproject) | Coverage Δ | | |---|---|---| | [linux](https://app.codecov.io/gh/vertexproject/synapse/pull/3862/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=vertexproject) | `96.27% <98.23%> (-0.02%)` | :arrow_down: | | [linux_replay](https://app.codecov.io/gh/vertexproject/synapse/pull/3862/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=vertexproject) | `?` | | 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=vertexproject#carryforward-flags-in-the-pull-request-comment) to find out more.

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