Ian Wienand 262281e5f7 Remove Trusty testing
Opendev has dropped trusty from the mirrors.  With no testing the
distribution is effectively unsupported, add a release note.  Update a
few other random doc bits (that are not really that up to date
anyway).

Change-Id: I5bd0d0a94477cf8d84cef72f5d4b2e9e15ab9fd2
2020-04-23 10:00:13 +10:00
..
2018-03-04 23:24:10 +01:00
2020-04-23 10:00:13 +10:00