test_gce: Fix invalid mock of platform_reports_gce to return False

The mock of platform_reports_gce is created with a True return value in
tests/unittests/test_datasource/test_gce.py:TestDataSourceGCE.setUp().
But, the final test_get_data_returns_false_if_not_on_gce incorrectly
attempts to override the mocked return_value of True to False by setting
self.m_platform_gce.return_value = False. But, since the mock is already
initialized, the updated False is not honored. Instead we should use the
patch decorator on the specific unit test to override the return_value of
DataSourceGCE.platform_reports_gce to False.

A False from platform_reports_gce allows DataSourceGCE.get_data to
immediately return False instead of trying to contact
metadata.google.internal as the related bug references.

0 files changed, 0 insertions, 0 deletions