[Merge] ~mitchburton/ubuntu/+source/landscape-client:ubuntu/lunar-devel into ubuntu/+source/landscape-client:ubuntu/lunar-devel

[Andreas Hasenack]

I made the d/control debhelper changes and sponsored.

Things to discuss/do after this upload, before the SRU potentially:
- revisit debhelper for the SRU, and even lunar
- handle the case where ua is not installed, or not executable. We shouldn't spam the LS server every 15min with an error in that case
- gpg key handling: use a more specific filename for the keyfiles, and restrict the globbing in postrm accordingly

-- 
https://code.launchpad.net/~mitchburton/ubuntu/+source/landscape-client/+git/landscape-client/+merge/437634
Your team Ubuntu Sponsors Team is requested to review the proposed merge of ~mitchburton/ubuntu/+source/landscape-client:ubuntu/lunar-devel into ubuntu/+source/landscape-client:ubuntu/lunar-devel.