[Merge] ~danilogondolfo/network-manager/+git/ubuntu-1:preinst_script_fix into network-manager:ubuntu/master

[Danilo Egea Gondolfo]

The proposal to merge ~danilogondolfo/network-manager/+git/ubuntu-1:preinst_script_fix into network-manager:ubuntu/master has been updated.

Description changed to:

Use /var/lib/NetworkManager for backups in the preinst script. As part of the netplan everywhere project we started creating backups of the existing Network Manager configuration before installation on /root but this is causing some problems. See https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/2021937

The side effect of using /var/lib/NetworkManager is that the backups will be removed on apt remove --purge (what is probably what the user wants when they use --purge?)

For more details, see:
https://code.launchpad.net/~danilogondolfo/network-manager/+git/ubuntu-1/+merge/443876
-- 
Your team Network-manager is requested to review the proposed merge of ~danilogondolfo/network-manager/+git/ubuntu-1:preinst_script_fix into network-manager:ubuntu/master.