James E. Blair f46801ec77 Use xenial for all py35 jobs
The default nodeset is now bionic which does not include py35, so
we need to explicitly request a nodeset which does.

Change-Id: I8b0ce86299fc1240a14492d9c0823647b41afaa3
2019-03-14 08:46:37 -07:00
..
2019-03-14 08:46:37 -07:00
2019-03-14 08:46:37 -07:00