Merge ~ltrager/maas:lp1889788_2.8 into maas:master

[Lee Trager]

LP: #1889788 - Always communicate with IPMI BMC's at OPERATOR level.

While the ipmipower command defaults to using OPERATOR the
ipmi-chassis-config and ipmitool commands both default to ADMIN.
Specify that OPERATOR should be used for all IPMI commands.

Backport of c348e0c

[Lee Trager (ltrager)]

Approved in https://code.launchpad.net/~ltrager/maas/+git/maas/+merge/388511

review: Approve

[MAAS Lander (maas-lander)]

LANDING
-b lp1889788_2.8 lp:~ltrager/maas/+git/maas into -b master lp:~maas-committers/maas

STATUS: FAILED BUILD
LOG: http://maas-ci.internal:8080/job/maas/job/branch-tester/8070/consoleText

Unmerged commits

56124bd... by Lee Trager on 2020-08-03

LP: #1889788 - Always communicate with IPMI BMC's at OPERATOR level.

While the ipmipower command defaults to using OPERATOR the
ipmi-chassis-config and ipmitool commands both default to ADMIN.
Specify that OPERATOR should be used for all IPMI commands.

Backport of c348e0c

72a8229... by Björn Tillenius on 2020-08-03

LP: #1888536 - named.conf.options.inside.maas reverts to default

run-named always generated a blank config for bind when it's started.

It's questionable why we need to do that on every start, but for now, we
don't generate a config if a config is alrady there.

This should be safe enough to backport, and then we can revisit this
later, to see if we can fix it in a better way.

(cherry picked from commit 192fd8b70d0524683a50f0510577bdb1dc89ec5a)

9fa0323... by Guilherme G. Piccoli on 2020-07-22

This is the NVMe secure erase implementation (+ one more patch, to fix/improve quick erase).
I tried to explain/detail everything in the commit messages; also, code/tests were validated against Flake8 to prevent style issues.

Backport of 9633810

a72f972... by Lee Trager on 2020-07-17

LP: #1869116 - Read storage model data from udev ID_MODEL_ENC. (gh:lxc/lxd:7665)

c4825ca... by Alberto Donato on 2020-07-06

Release 2.8.1

e2cce5b... by Adam Collard on 2020-06-30

[2.8 backport] Don't break the retry behaviour by excluding BaseException

78d99f0... by Alberto Donato on 2020-06-30

Release 2.8.1 RC1

34df7cc... by Adam Collard on 2020-06-30

[2.8 backport] Improve robustness of NUMA node identification

Fixes LP:1885157

2f9a105... by Alberto Donato on 2020-06-30

LP:1885682 - only copy chrony.conf if doesn't exist

538c7b7... by huwshimi <email address hidden> on 2020-06-30

Update maas-ui to ae8c1768846e4729f6d8f39a7d2af49df5f7aaed