network-manager 1.8.4-1ubuntu3 ADT test failure with linux 4.14.0-6.8

[Seth Forshee]

Testing failed on:
    s390x: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-bionic-canonical-kernel-team-bootstrap/bionic/s390x/n/network-manager/20171107_135937_02323@/log.gz

[Seth Forshee (sforshee)]

autopkgtest [13:37:31]: test wpa-dhclient: [-----------------------
modprobe: FATAL: Module cfg80211 not found in directory /lib/modules/4.14.0-6-generic
ERROR

======================================================================
ERROR: setUpClass (__main__.T)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/autopkgtest.J2UcbH/build.Dbb/network-manager-1.8.4/debian/tests/network_test_base.py", line 47, in setUpClass
    subprocess.check_call(['modprobe', 'cfg80211'])
  File "/usr/lib/python3.6/subprocess.py", line 291, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['modprobe', 'cfg80211']' returned non-zero exit status 1.

----------------------------------------------------------------------
Ran 0 tests in 0.002s

FAILED (errors=1)
autopkgtest [13:37:32]: test wpa-dhclient: -----------------------]

[Seth Forshee (sforshee)]

This and other errors are related to lacking the cfg80211 module, which we do not build for s390. However we did not build it in artful either, and we currently have the same version of network-manager in artful and bionic, so it's odd that the tests are failing in bionic and not in artful.

[Seth Forshee (sforshee)]

Tests were previously getting skipped for s390, due to "Restrictions: ... isolation-machine" in the test control file. Possibly some sort of infrastructure problem detecting that the tests are running in a container.

[Seth Forshee (sforshee)]

Seems that s390x ADT does now run in VMs, which explains the change.

Since we don't have wireless support in our s390x kernels, these failures are expected. Seems the tests will need to be changed to skip these tests or make them expected failures.