fix(dedibox): set default value project-id

[Laure-di]

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Relates OR Closes #0000

Release note for CHANGELOG:

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 31 lines in your changes missing coverage. Please review.

Project coverage is 69.18%. Comparing base (5bf53e0) to head (ed4a1ce).
Report is 123 commits behind head on master.

Files	Patch %	Lines
internal/namespaces/dedibox/v1/custom.go	0.00%	30 Missing ⚠️
internal/core/context.go	0.00%	1 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (5bf53e0) and HEAD (ed4a1ce). Click for more details.

HEAD has 1 upload less than BASE

| Flag | BASE (5bf53e0) | HEAD (ed4a1ce) | |------|------|------| ||2|1|

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3916      +/-   ##
==========================================
- Coverage   75.45%   69.18%   -6.27%     
==========================================
  Files         202      288      +86     
  Lines       44323    54560   +10237     
==========================================
+ Hits        33444    37750    +4306     
- Misses       9653    15276    +5623     
- Partials     1226     1534     +308     

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The merge-base changed after approval.