chore: copy configs to begin reorganizing kokoro configs

[nolanmar511]

Copy configs to final locations.

After these changes are completed, all configs in kokoro/continuous, kokoro/presubmit, and kokoro/release will be deleted.

Release configs will be deleted now that pprof-nodejs contains the native component. We will use the release workflow used by other node modules in the googleapis organization.

[aalexand]

@nolanmar511 In the final state only one of the .kokoro vs. tools/kokoro locations will exist? The difference between the two is currently unclear.

[nolanmar511]

tools/kokoro our system tests (which we maintain). I'm happy to make any changes to the kokoro configs these.

.kokoro is unit tests (and hopefully soon a release job). jkwlui maintains this. This directory is common to Node.JS modules under googleapis (for example, https://github.com/googleapis/cloud-debug-nodejs/tree/master/.kokoro). I really don't want to make any changes to this directory -- I want it to be as easy as possible for the client libraries team to maintain kokoro jobs across multiple repositories.

So, we will have two locations for our kokoro configs. Maybe I should rename and re-structure tools directory so it matches .kokoro.

We could, for example replace the tools directory with the following:

.kokoro-system-test

• continuous
  • system-test.cfg
  • v8-canary-system-test.cfg
• presubmit
  • system-test.cfg

[aalexand]

@nolanmar511 I see. Maybe at least add a tools/kokoro/README.md and .kokoro/README.md file explaining the intent of each location and its counterpart.

[codecov]

Codecov Report

Merging #441 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #441   +/-   ##
=======================================
  Coverage   75.94%   75.94%           
=======================================
  Files           4        4           
  Lines         212      212           
  Branches       24       24           
=======================================
  Hits          161      161           
  Misses         48       48           
  Partials        3        3

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[nolanmar511]

All of our remaining kokoro configs are for system tests, so I moved them all into a "system-test" directory (I also renamed the "testing" directory "system-test").

There's already a README.md in the system-test directory; I added a README.md to the .kokoro directory.

[aalexand]

@nolanmar511 Kokoro CI fails?

[nolanmar511]

npm audit is failing because of Mocha.
snyk fails because I moved busybench. Based on the "details" link for that failure, I'm going to update the location after I merge this change.

[nolanmar511]

Kokoro CI also is passing. It failed earlier, because I didn't update all references to files that I had moved.