feat(translator): use SDS to deliver system trust store to support dynamic reload

[guydc]

What type of PR is this?

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #5074

Release Notes: Yes

[codecov]

Codecov Report

Attention: Patch coverage is 94.59459% with 2 lines in your changes missing coverage. Please review.

Project coverage is 66.83%. Comparing base (27a2ef3) to head (9e3d054).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/xds/translator/translator.go	94.11%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5084      +/-   ##
==========================================
- Coverage   66.85%   66.83%   -0.03%     
==========================================
  Files         211      211              
  Lines       32916    32904      -12     
==========================================
- Hits        22007    21990      -17     
- Misses       9584     9588       +4     
- Partials     1325     1326       +1     

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