linux-lts-xenial 4.4.0-116.140~14.04.1 ADT test failure with linux-lts-xenial 4.4.0-116.140~14.04.1

[Kleber Sacilotto de Souza]

Testing failed on:
    ppc64el: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-trusty/trusty/ppc64el/l/linux-lts-xenial/20180221_035611_dcdae@/log.gz

[Kleber Sacilotto de Souza (kleber-souza)]

ubuntu_qrt_* tests are unable to git clone the qa-regression-testing repo:

===================================================================================
03:21:59 DEBUG| Running 'git clone --depth 1 https://git.launchpad.net/qa-regression-testing'
03:21:59 ERROR| [stderr] Cloning into 'qa-regression-testing'...
03:25:33 ERROR| [stderr] fatal: unable to access 'https://git.launchpad.net/qa-regression-testing/': Failed to connect to git.launchpad.net port 443: Connection timed out
03:25:33 ERROR| Exception escaping from test:
Traceback (most recent call last):
  File "/tmp/autopkgtest.1EtuPB/build.Qgi/src/autotest/client/shared/test.py", line 387, in _exec
    *p_args, **p_dargs)
  File "/tmp/autopkgtest.1EtuPB/build.Qgi/src/autotest/client/shared/utils.py", line 865, in update_version
    install(*args, **dargs)
  File "/tmp/autopkgtest.1EtuPB/build.Qgi/src/autotest/client/tests/ubuntu_qrt_kernel_panic/ubuntu_qrt_kernel_panic.py", line 28, in setup
    self.results = utils.system_output(cmd, retain_output=True)
  File "/tmp/autopkgtest.1EtuPB/build.Qgi/src/autotest/client/shared/utils.py", line 1267, in system_output
    verbose=verbose, args=args).stdout
  File "/tmp/autopkgtest.1EtuPB/build.Qgi/src/autotest/client/shared/utils.py", line 918, in run
    "Command returned non-zero exit status")
CmdError: Command <git clone --depth 1 https://git.launchpad.net/qa-regression-testing> failed, rc=128, Command returned non-zero exit status
* Command:
    git clone --depth 1 https://git.launchpad.net/qa-regression-testing
Exit status: 128
Duration: 213.705938101
===================================================================================

Networking on the node is active, since it can run apt-get install:

===================================================================================
03:14:38 DEBUG| [stdout] The following NEW packages will be installed:
03:14:38 DEBUG| [stdout] execstack exim4 exim4-base exim4-config exim4-daemon-light heirloom-mailx
03:14:38 DEBUG| [stdout] libcap-dev libelfg0
03:14:38 DEBUG| [stdout] 0 upgraded, 8 newly installed, 0 to remove and 0 not upgraded.
03:14:38 DEBUG| [stdout] Need to get 1925 kB of archives.
03:14:38 DEBUG| [stdout] After this operation, 5359 kB of additional disk space will be used.
03:14:38 DEBUG| [stdout] Get:1 http://ftpmaster.internal/ubuntu/ trusty/main libelfg0 ppc64el 0.8.13-5 [34.6 kB]
03:14:38 DEBUG| [stdout] Get:2 http://ftpmaster.internal/ubuntu/ trusty/main execstack ppc64el 0.0.20090925-8 [56.7 kB]
03:14:38 DEBUG| [stdout] Get:3 http://ftpmaster.internal/ubuntu/ trusty-updates/main exim4-config all 4.82-3ubuntu2.4 [298 kB]
03:14:39 DEBUG| [stdout] Get:4 http://ftpmaster.internal/ubuntu/ trusty-updates/main exim4-base ppc64el 4.82-3ubuntu2.4 [855 kB]
03:14:40 DEBUG| [stdout] Get:5 http://ftpmaster.internal/ubuntu/ trusty-updates/main exim4-daemon-light ppc64el 4.82-3ubuntu2.4 [443 kB]
03:14:41 DEBUG| [stdout] Get:6 http://ftpmaster.internal/ubuntu/ trusty-updates/main exim4 all 4.82-3ubuntu2.4 [7890 B]
03:14:41 DEBUG| [stdout] Get:7 http://ftpmaster.internal/ubuntu/ trusty-updates/universe heirloom-mailx ppc64el 12.5-2+deb7u1build0.14.04.1 [208 kB]
03:14:42 DEBUG| [std...