Run gsutil with full python3 and full path.

[godofredoc]

This is to prevent failures when the gsutil.py is not executable.

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I read the Tree Hygiene wiki page, which explains my responsibilities.
• I read and followed the Flutter Style Guide, including Features we expect every widget to implement.
• I signed the CLA.
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or this PR is test-exempt.
• All existing and new tests are passing.

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[drewroengoogle]

LGTM

[christopherfujino]

so DEPOT_TOOLS env var is set on linux and mac, right? previously we were relying on it being on path

[godofredoc]

That's correct.

[christopherfujino]

cool, lgtm

[christopherfujino]

Looks like unit tests are failing:

00:25 +30 ~1 -5: test/prepare_package_test.dart: ArchivePublisher for linux updates base_url from old bucket to new bucket [E]                                                                         
  Expected: [
              'gsutil.py',
              '--',
              'cp',
              'gs://flutter_infra_release/releases/releases_linux.json',
              '/b/s/w/ir/x/t/flutter_prepage_package_test.WXVRYT/releases_linux.json'
            ]
    Actual: [
              'python3',
              'D:/depot_tools/gsutil.py',
              '--',
              'cp',
              'gs://flutter_infra_release/releases/releases_linux.json',
              '/b/s/w/ir/x/t/flutter_prepage_package_test.WXVRYT/releases_linux.json'
            ]
     Which: at location [0] is 'python3' instead of 'gsutil.py'

[christopherfujino]

Windows framework_tests_libraries looks like a goldens flake

[godofredoc]

Looks like unit tests are failing:

00:25 +30 ~1 -5: test/prepare_package_test.dart: ArchivePublisher for linux updates base_url from old bucket to new bucket [E]                                                                         
  Expected: [
              'gsutil.py',
              '--',
              'cp',
              'gs://flutter_infra_release/releases/releases_linux.json',
              '/b/s/w/ir/x/t/flutter_prepage_package_test.WXVRYT/releases_linux.json'
            ]
    Actual: [
              'python3',
              'D:/depot_tools/gsutil.py',
              '--',
              'cp',
              'gs://flutter_infra_release/releases/releases_linux.json',
              '/b/s/w/ir/x/t/flutter_prepage_package_test.WXVRYT/releases_linux.json'
            ]
     Which: at location [0] is 'python3' instead of 'gsutil.py'

Updated the tests.

[christopherfujino]

LGTM

[christopherfujino]

cool, lgtm

[auto-submit]

auto label is removed for flutter/flutter/132805, due to - The status or check suite Linux web_long_running_tests_5_5 has failed. Please fix the issues identified (or deflake) before re-applying this label.