fix s2i on cluster RT tests

[matejvasek]

Fix s2i on cluster RT tests.

• Use smaller s2i builder image for nodejs
• Skip python s2i on cluster build when running in GH action

chore: using nodejs-16-minimal instead of nodejs-16 as default builder for JS/TS

[knative-prow]

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This pull-request has been approved by: matejvasek

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[jrangelramos]

/lgtm

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (7b09bcd) 54.12% compared to head (312433a) 60.66%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2015      +/-   ##
==========================================
+ Coverage   54.12%   60.66%   +6.54%     
==========================================
  Files         105      106       +1     
  Lines       13691    13693       +2     
==========================================
+ Hits         7410     8307     +897     
+ Misses       5520     4548     -972     
- Partials      761      838      +77     

Flag	Coverage Δ
e2e-test	36.46% <ø> (?)
e2e-test-oncluster	30.42% <ø> (-0.03%)	⬇️
e2e-test-oncluster-runtime	26.72% <ø> (?)
e2e-test-runtime-go	25.50% <ø> (?)
e2e-test-runtime-node	26.60% <ø> (?)
e2e-test-runtime-python	26.60% <ø> (?)
e2e-test-runtime-quarkus	26.71% <ø> (?)
e2e-test-runtime-rust	25.50% <ø> (?)
e2e-test-runtime-springboot	25.70% <ø> (?)
e2e-test-runtime-typescript	26.71% <ø> (?)
unit-tests-macos-latest	48.21% <ø> (?)
unit-tests-ubuntu-latest	48.98% <ø> (-0.03%)	⬇️
unit-tests-windows-latest	48.25% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
pkg/builders/s2i/builder.go	64.17% <ø> (+3.54%)	⬆️

... and 26 files with indirect coverage changes

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[gauron99]

/lgtm