Removing Ubuntu 14.04 LTS support in master (4.12 release)

[Wido den Hollander <wi...@widodh.nl>]

Hi,

I've just opened a Pull Requests [0] to remove support for Ubuntu 14.04.

Ubuntu 14.04 will be EOL in 2019 and the current LTS versions are 16.04
(2021) and 18.04 (2023).

Ubuntu 14.04 lacks Java 8 and also has older Qemu and Libvirt versions.

Yet to be implemented/merged functions like Live Storage Migration and
Burst I/O limitation for KVM require more recent versions of Qemu and
Libvirt not provided by Ubuntu 14.04.

Therefor I opened the Pull Request to drop support for 14.04 in the
master branch.

With the 4.12 release happening later this year or early next year we
would be trying to support a Ubuntu release which will go EOL in ~6 months.

The current 4.11 release will support Ubuntu 14.04, so users running
that CloudStack version can keep running their infrastructure.

If there are objections, please post a comment on the Pull Request or if
you agree with dropping the support, please post a comment as well.

Wido

[0]: https://github.com/apache/cloudstack/pull/2828