I found a workaround that worked for me --
edit /usr/share/distro-info/ubuntu.csv
and remove these lines --
15.04,Vivid Vervet,vivid,2014-10-23,2015-04-23,2016-01-23 15.10,Wily Werewolf,wily,2015-04-23,2015-10-22,2016-07-22 16.04 LTS,Xenial Xerus,xenial,2015-10-22,2016-04-21,2021-04-21 16.10,Yakkety Yak,yakkety,2016-04-21,2016-10-20,2017-07-20
BEFORE: root@bootstrap:/usr/share/distro-info# distro-info --lts xenial root@bootstrap:/usr/share/distro-info# vi ubuntu.csv
AFTER root@bootstrap:/usr/share/distro-info# distro-info --lts trusty
I found a workaround that worked for me --
edit /usr/share/ distro- info/ubuntu. csv
and remove these lines --
15.04,Vivid Vervet, vivid,2014- 10-23,2015- 04-23,2016- 01-23 wily,2015- 04-23,2015- 10-22,2016- 07-22 2015-10- 22,2016- 04-21,2021- 04-21 2016-04- 21,2016- 10-20,2017- 07-20
15.10,Wily Werewolf,
16.04 LTS,Xenial Xerus,xenial,
16.10,Yakkety Yak,yakkety,
BEFORE: /usr/share/ distro- info# distro-info --lts /usr/share/ distro- info# vi ubuntu.csv
root@bootstrap:
xenial
root@bootstrap:
AFTER /usr/share/ distro- info# distro-info --lts
root@bootstrap:
trusty