Comment 1 for bug 1714117

Diagnosed which test it was with:

$ git clone https://git.launchpad.net/cloud-init
$ cd cloud-init
$ nosetests --with-timer --timer-ok 1 --timer-warning 5

This results in a sorted listed list of all tests with timing in green if less than 1 second, yellow if between 1 and 5 seconds, and red if greater than 5 seconds. All tests were less than one second, except these:

[success] 19.54% tests.unittests.test_datasource.test_ec2.TestEc2.test_unknown_platform_with_strict_false: 127.3695s
[success] 19.54% tests.unittests.test_datasource.test_ec2.TestEc2.test_valid_platform_with_strict_true: 127.3614s
[success] 19.54% tests.unittests.test_datasource.test_ec2.TestEc2.test_valid_platform_with_strict_false: 127.3573s
[success] 19.54% tests.unittests.test_datasource.test_ec2.TestEc2.test_network_config_property_returns_version_1_network_data: 127.3403s
[success] 19.54% tests.unittests.test_datasource.test_ec2.TestEc2.test_ec2_local_performs_dhcp_on_non_bsd: 127.3302s
[success] 0.78% tests.unittests.test_datasource.test_openstack.TestOpenStackDataSource.test_datasource: 5.0584s
[success] 0.77% tests.unittests.test_datasource.test_openstack.TestOpenStackDataSource.test_bad_datasource_meta: 5.0298s

These account for 99.25% of the run time.