[8.0-pkg-systest-ubuntu] Network issues while "verify_networks"

[Paul Karikh]

A job https://packaging-ci.infra.mirantis.net/job/8.0-pkg-systest-ubuntu/1832/ was failed. Looks like there are some problem network interfaces since astute.log has the followinf errors:

`Spawning listener for enp0s6 failed.` and `No route found for IPv6 destination`.
Looks like these errors a happened on the step "verify_networks". More traces are here: https://paste.mirantis.net/show/1736/

Also there are errors like this:

:stderr=>
    "W: GPG error: http://mirror.fuel-infra.org mos8.0-holdback Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BCE5CC461FA22B08\nW: GPG error: http://mirror.fuel-infra.org mos8.0-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BCE5CC461FA22B08\nW: GPG error: http://mirror.fuel-infra.org mos8.0-updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BCE5CC461FA22B08\nW: GPG error: http://perestroika-repo-tst.infra.mirantis.net mos8.0 Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY BCE5CC461FA22B08\n",
   :exit_code=>0}}

But I have not found any signs of connectivity problems or "fetching was failed errors".

[Dmitry Kaigarodеsev (dkaiharodsev)]

Looks like the issue is outdated and related patchset (https://review.fuel-infra.org/#/c/16140/) has been merged after re-trigger.