mock sleep() in azure test

[holmanb]

It looks like this is patched in other tests, this must have been missed.

Proposed Commit Message

mock sleep() in azure test

It looks like this is patched in other tests, this must have been missed.

arc~/cloud-init(:cd40789a|…) pytest --durations=1 tests/unittests/sources/test_azure.py
=========================================================================================== test session starts ============================================================================================
platform linux -- Python 3.9.7, pytest-6.0.2, py-1.10.0, pluggy-0.13.0
rootdir: /home/holmanb/cloud-init, configfile: tox.ini
plugins: cov-3.0.0, xdist-2.2.0, forked-1.3.0
collected 160 items                                                                                                                                                                                        

tests/unittests/sources/test_azure.py .............................................................................................................................................................. [ 98%]
..                                                                                                                                                                                                   [100%]

=========================================================================================== slowest 1 durations ============================================================================================
0.50s call     tests/unittests/sources/test_azure.py::TestPreprovisioningHotAttachNics::test_wait_for_link_up_checks_link_after_sleep
=========================================================================================== 160 passed in 2.61s ============================================================================================



arc~/cloud-init(main↓1↑5|…) pytest --durations=1 tests/unittests/sources/test_azure.py
=========================================================================================== test session starts ============================================================================================
platform linux -- Python 3.9.7, pytest-6.0.2, py-1.10.0, pluggy-0.13.0
rootdir: /home/holmanb/cloud-init, configfile: tox.ini
plugins: cov-3.0.0, xdist-2.2.0, forked-1.3.0
collected 160 items                                                                                                                                                                                        

tests/unittests/sources/test_azure.py .............................................................................................................................................................. [ 98%]
..                                                                                                                                                                                                   [100%]

=========================================================================================== slowest 1 durations ============================================================================================
0.04s call     tests/unittests/sources/test_azure.py::TestAzureDataSource::test_user_not_locked_if_password_redacted
=========================================================================================== 160 passed in 2.11s ============================================================================================

[blackboxsw]

+!