When using v2 functions enable Compute Service API and grant its P4SA necessary IAM roles

[pavelgj]

No description provided.

[codecov-commenter]

Codecov Report

Base: 56.38% // Head: 56.42% // Increases project coverage by +0.04% 🎉

Coverage data is based on head (72e0377) compared to base (3d89222).
Patch coverage: 75.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5338      +/-   ##
==========================================
+ Coverage   56.38%   56.42%   +0.04%     
==========================================
  Files         314      315       +1     
  Lines       21102    21138      +36     
  Branches     4286     4290       +4     
==========================================
+ Hits        11899    11928      +29     
- Misses       8178     8185       +7     
  Partials     1025     1025              

Impacted Files	Coverage Δ
src/deploy/extensions/prepare.ts	23.07% <25.00%> (+0.10%)	⬆️
src/deploy/extensions/v2FunctionHelper.ts	81.25% <81.25%> (ø)
src/emulator/auth/state.ts	85.43% <0.00%> (+0.56%)	⬆️

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[joehan]

Some nits but lgtm