chore: add node:16 to the test matrix

[rauno56]

Which problem is this PR solving?

• Add node:16 to the test matrix;
• Add chown -R 1001:121 "/github/home/.npm" to fix the cache permissions - npm v7 does not allow root-owned files in cache;
• Revert karma-webpack to v4 in some packages because of the peerDep conflict;
• Fix net instrumentation test - in node v16 socket.connect is more strict with passed params;

Adds current node version(16) to the test matrix.

• chore: add node:16 to the test matrix opentelemetry-js#2244
• chore: add node:16 to the test matrix opentelemetry-js-api#85

[codecov]

Codecov Report

Merging #510 (f996550) into main (93753ec) will decrease coverage by 0.44%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #510      +/-   ##
==========================================
- Coverage   95.24%   94.79%   -0.45%     
==========================================
  Files           8      152     +144     
  Lines         505     9230    +8725     
  Branches       89      918     +829     
==========================================
+ Hits          481     8750    +8269     
- Misses         24      480     +456     

Impacted Files	Coverage Δ
...de/opentelemetry-instrumentation-hapi/src/types.ts	100.00% <0.00%> (ø)
...e/opentelemetry-instrumentation-mysql/src/utils.ts	100.00% <0.00%> (ø)
...propagator-aws-xray/test/AWSXRayPropagator.test.ts	100.00% <0.00%> (ø)
...metry-instrumentation-winston/test/winston.test.ts	97.87% <0.00%> (ø)
...opentelemetry-instrumentation-mongodb/src/types.ts	100.00% <0.00%> (ø)
...y-instrumentation-hapi/src/enums/AttributeNames.ts	100.00% <0.00%> (ø)
...opentelemetry-instrumentation-net/test/tls.test.ts	93.24% <0.00%> (ø)
...node/opentelemetry-instrumentation-pg/src/utils.ts	97.26% <0.00%> (ø)
...ackages/opentelemetry-host-metrics/src/stats/si.ts	66.66% <0.00%> (ø)
...e/opentelemetry-instrumentation-koa/src/version.ts	100.00% <0.00%> (ø)
... and 134 more

[rauno56]

That's interesting. Does anyone have experience with the error in CI?

Since we're not caching anything yet in the node:16 runs, I assume it has to do with the underlying node container.

npm ERR! code EACCES
npm ERR! syscall mkdir
npm ERR! path /github/home/.npm/_cacache/content-v2/sha1/46/c3
npm ERR! errno -13
npm ERR! 
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR! 
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 1001:121 "/github/home/.npm"

npm ERR! A complete log of this run can be found in:
npm ERR!     /github/home/.npm/_logs/2021-05-31T19_13_29_158Z-debug.log

[rauno56]

@anuraaga, I reverted karma-webpack version to 4 for packages, you've contributed. Is that alright?