[CI] Only run jobs for selected roles

[peterargue]

The original version would spawn jobs and do all of the pre-build steps for all roles, wasting runner resources. This change:

• Only creates jobs for roles that were selected
• Skips building relic on the node runner since it is already run during the docker builds

[codecov-commenter]

Codecov Report

Merging #4075 (f88e48a) into master (50a5267) will decrease coverage by 2.37%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4075      +/-   ##
==========================================
- Coverage   53.49%   51.12%   -2.37%     
==========================================
  Files         831      669     -162     
  Lines       77720    59929   -17791     
==========================================
- Hits        41575    30640   -10935     
+ Misses      32816    26833    -5983     
+ Partials     3329     2456     -873     

Flag	Coverage Δ
unittests	51.12% <ø> (-2.37%)	⬇️

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see 172 files with indirect coverage changes

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[sjonpaulbrown]

If we were to shift the build selected step in a job, we could streamline this and remove the need for the conditional if: env.role_enabled steps. If the role is to be built, we add that role to an array which would be used as the value of the matrix.

This would ensure that jobs are only executed for roles that are to be built. It would "cleanup" the execution so that unnecessary jobs are not displayed in the workflow execution, and it would remove the complexity of the conditional statements.

Here is a StackOverflow post for a reference of "dynamic" matrix values from a previous job.

[peterargue]

bors merge

[bors]

Build succeeded:

• Integration Tests (make -C integration access-tests)
• Integration Tests (make -C integration bft-tests)
• Integration Tests (make -C integration collection-tests)
• Integration Tests (make -C integration consensus-tests)
• Integration Tests (make -C integration epochs-tests)
• Integration Tests (make -C integration execution-tests)
• Integration Tests (make -C integration ghost-tests)
• Integration Tests (make -C integration mvp-tests)
• Integration Tests (make -C integration network-tests)
• Integration Tests (make -C integration verification-tests)
• Lint (./)
• Lint (./crypto/)
• Lint (./integration/)
• Unit Tests (access)
• Unit Tests (admin)
• Unit Tests (cmd)
• Unit Tests (consensus)
• Unit Tests (engine)
• Unit Tests (fvm)
• Unit Tests (ledger)
• Unit Tests (module)
• Unit Tests (network)
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• Unit Tests (utils)