Test tests/main/lxd-try is flaky

[Ian Johnson]

See:

retry: command sh -c lxd.lxc exec ubuntu -- systemctl is-system-running | MATCH "(running|degraded)" failed with code 1
retry: next attempt in 1 second(s) (attempt 25 of 30)
grep error: pattern not found, got:
initializing
retry: command sh -c lxd.lxc exec ubuntu -- systemctl is-system-running | MATCH "(running|degraded)" failed with code 1
retry: next attempt in 1 second(s) (attempt 26 of 30)
grep error: pattern not found, got:
starting
retry: command sh -c lxd.lxc exec ubuntu -- systemctl is-system-running | MATCH "(running|degraded)" failed with code 1
retry: next attempt in 1 second(s) (attempt 27 of 30)
grep error: pattern not found, got:
starting
retry: command sh -c lxd.lxc exec ubuntu -- systemctl is-system-running | MATCH "(running|degraded)" failed with code 1
retry: next attempt in 1 second(s) (attempt 28 of 30)
grep error: pattern not found, got:
starting
retry: command sh -c lxd.lxc exec ubuntu -- systemctl is-system-running | MATCH "(running|degraded)" failed with code 1
retry: next attempt in 1 second(s) (attempt 29 of 30)
grep error: pattern not found, got:
starting
retry: command sh -c lxd.lxc exec ubuntu -- systemctl is-system-running | MATCH "(running|degraded)" failed with code 1
retry: command sh -c lxd.lxc exec ubuntu -- systemctl is-system-running | MATCH "(running|degraded)" keeps failing after 30 attempts

Perhaps we just need to make the timeout longer, since it did transition from "initializing" to "starting".

Full log available at https://pastebin.ubuntu.com/p/955C7GkKYj/

[Ian Johnson (anonymouse67)]

Seen again on 21.10: https://pastebin.ubuntu.com/p/C2wcDD5Syx/