POC: fleetd requests cert for TPM

[getvictor]

Fixes #29935

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 15.38462% with 11 lines in your changes missing coverage. Please review.

Project coverage is 65.36%. Comparing base (092b068) to head (796ab55). Report is 114 commits behind head on main.

Files with missing lines	Patch %	Lines
server/datastore/mysql/scep.go	0.00%	7 Missing :warning:
server/service/base_client.go	0.00%	2 Missing and 1 partial :warning:
server/service/orbit_client.go	0.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #30055      +/-   ##
==========================================
+ Coverage   64.15%   65.36%   +1.20%     
==========================================
  Files        1867     1083     -784     
  Lines      182671   148586   -34085     
  Branches     5220        0    -5220     
==========================================
- Hits       117194    97122   -20072     
+ Misses      56268    42821   -13447     
+ Partials     9209     8643     -566     

Flag	Coverage Δ
backend	65.36% <15.38%> (+0.26%)	:arrow_up:
fleetd-chrome	?
frontend	?

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