Also run tests on our proxy for lowest suppored environment
Also run tests on our proxy for lowest suppored environment

The proxy is Fedora 30, since that is the oldest that has cryptsetup 2.3.0.

Signed-off-by: mulhern <7b51bcf507bcd7afb72bf8663752c0ddbeb517f6@redhat.com>

stratis-storage/stratis-cli,stratis-storage/stratis-cli