Preserve TESTDIR when using Github Actions

[weitzman]

The Issue

Allow bats runners to avoid deletion of the testdir. Helpful when uploading artifacts as per

• Upload artifacts example github-action-add-on-test#50

How This PR Solves The Issue

Detect GITHUB_ENV env variable and avoid deleting the test directory. This is set to true for runs in GitHub Actions. Locally you can set it as well for same behavior.

Manual Testing Instructions

git clone --branch preserve-dir --single-branch https://github.com/weitzman/ddev-addon-template
cd ddev-addon-template
GITHUB_ENV=1 bats ./tests/test.bats --filter-tags '!release'
# and see ~/tmp/test-ddev-addon-template.XXXXXX after the test is done

Working example is in:

• fix: make artifact uploads work ddev-selenium-standalone-chrome#67

[stasadev]

On second thought, we don't even need this DDEV_PRESERVE_TESTDIR, if we can look at GITHUB_ENV, right?

Please update the OP using the template. Giving link to external website is not useful.

[stasadev]

Looks good to me.

[julienloizelet]

Ok for me ! Thank you

[stasadev]

Working example is in:

• fix: make artifact uploads work ddev-selenium-standalone-chrome#67

[stasadev]

Additional fix to upload all test results:

• fix: store TESTDIR without suffix, for #79 #80