feat(instance): support legacy b_ssd in server creation

[Codelax]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 55.51%. Comparing base (5bf53e0) to head (a2e33e9).
Report is 592 commits behind head on master.

Files with missing lines	Patch %	Lines
...spaces/instance/v1/custom_server_create_builder.go	0.00%	2 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (5bf53e0) and HEAD (a2e33e9). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (5bf53e0)	HEAD (a2e33e9)
	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #4672       +/-   ##
===========================================
- Coverage   75.45%   55.51%   -19.94%     
===========================================
  Files         202      308      +106     
  Lines       44323    78586    +34263     
===========================================
+ Hits        33444    43630    +10186     
- Misses       9653    33556    +23903     
- Partials     1226     1400      +174     

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[pierre-muller]

Do we want to add a feature which will be deprecated in the coming weeks (April 30th)?