Nightly CI builds are failing because due to missing get_interfaces_by_mac mocking

[Dan Watkins]

get_interfaces_by_mac is currently errorring on the system that runs cloud-init's nightly CI. This indicates missing mocking in the following tests:

FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_context_devname
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_field
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_field_emptycontext
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_field_nonecontext
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_field_withdefaultvalue
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_field_withdefaultvalue_emptycontext
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_gateway
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_gateway6
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_ip
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_ip6
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_ip6_dual
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_ip6_prefix
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_ip6_prefix_emptystring
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_ip6_ula
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_ip_emptystring
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_mask
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_mask_emptystring
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_mtu
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_nameservers
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_network
FAILED tests/unittests/test_datasource/test_opennebula.py::TestOpenNebulaNetwork::test_get_network_emptystring
FAILED cloudinit/sources/tests/test_oracle.py::TestDataSourceOracle::test_network_cmdline
FAILED cloudinit/sources/tests/test_oracle.py::TestDataSourceOracle::test_network_fallback

(Sourced from https://jenkins.ubuntu.com/server/job/cloud-init-ci-nightly/712/.)

[Dan Watkins (oddbloke)]

PR for this is open at https://github.com/canonical/cloud-init/pull/326

[Dan Watkins (oddbloke)]

Fix landed in https://github.com/canonical/cloud-init/commit/d7cad8b61a3b5929a65202e0964aa9b4624e06c4.

[Chad Smith (chad.smith)]

This bug is believed to be fixed in cloud-init in version 20.2. If this is still a problem for you, please make a comment and set the state back to New

Thank you.

[James Falcon (falcojr)]

Tracked in Github Issues as https://github.com/canonical/cloud-init/issues/3656