Fix performanceTest.wls for DevUtils

[maxitg]

Changes

• ./performanceTest.wls got broken after the introduction of in-place builds DevUtils: inplace builds, caching of libraries, hot reloading #529. This PR fixes it.
• As a result, ./performanceTest.wls no longer installs any paclets, and tests everything in-place.
• Also added ./performanceTest.wls master @HEAD 2 to CI to prevent the script from breaking in the future, and to have an easy access to performance results.

Comments

• Having it in CI causes a ~30 seconds slowdown.
• I'm only running 2 tests instead of the default 5 to minimize that slowdown.
• CI won't fail if there is a slowdown. The purpose of this PR is to test the script itself, not its output.

Examples

• Check Performance Test in CI: https://app.circleci.com/pipelines/github/maxitg/SetReplace/1367/workflows/a36a3d08-0121-4b76-822b-457b8b680c1d/jobs/1825.

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This change is 

[taliesinb]

Reviewed 2 of 2 files at r1.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @aokellermann and @maxitg)

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performanceTest.wls, line 8 at r1 (raw file):

  Get["DevUtils/init.m"];
  Get["Kernel/init.m"];
,

Are you sure that you can get away with using relative paths like this? What if I invoke the script from a different directory to the one the script is in?

[maxitg]

Reviewable status: 1 of 2 files reviewed, 1 unresolved discussion (waiting on @aokellermann and @taliesinb)

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performanceTest.wls, line 8 at r1 (raw file):

Previously, taliesinb (Taliesin Beynon) wrote…

Are you sure that you can get away with using relative paths like this? What if I invoke the script from a different directory to the one the script is in?

Good point. Fixed.

[taliesinb]

Reviewed 1 of 1 files at r2.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @aokellermann)