virtualization/verify_lxd_vm should wait longer before trying to access the VM

[bladernr]

Bug Description

The test works fine, but is a bit quick to start trying to ssh into the VM, causing several retries. This makes the log noisy.

Simple fix, it just needs a longer pause before trying to connect to the VM, and maybe longer between retries too, to avoid unnecessary repetition.

To Reproduce

Run checkbox and run the virtualization/verify_lxd_vm job
Note in the logs all the retries (captured below).

Environment

Current checkbox version

Relevant log output

DEBUG:root:Wait for vm to boot
ERROR:root:Command lxc exec testbed -- lsb_release -a returnd a code of 1
ERROR:root: STDOUT: 
ERROR:root: STDERR: Error: Failed to connect to lxd-agent

DEBUG:root:Re-verify VM booted
ERROR:root:Command lxc exec testbed -- lsb_release -a returnd a code of 1
ERROR:root: STDOUT: 
ERROR:root: STDERR: Error: Instance is not running

DEBUG:root:Re-verify VM booted
ERROR:root:Command lxc exec testbed -- lsb_release -a returnd a code of 1
ERROR:root: STDOUT: 
ERROR:root: STDERR: Error: Failed to connect to lxd-agent

DEBUG:root:Re-verify VM booted
ERROR:root:Command lxc exec testbed -- lsb_release -a returnd a code of 1
ERROR:root: STDOUT: 
ERROR:root: STDERR: Error: Failed to connect to lxd-agent

DEBUG:root:Re-verify VM booted
DEBUG:root:Command lxc exec testbed -- lsb_release -a:
DEBUG:root: STDOUT: Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.1 LTS
Release:	20.04
Codename:	focal

Additional context

Simple fix to clear up a minor annoyance and make the test output cleaner.

[mreed8855]

The logs from the updated pull request now look like the following:

DEBUG:root:Wait for vm to boot
ERROR:root:Command lxc exec testbed -- lsb_release -a returned a code of 255
ERROR:root: STDOUT:
DEBUG:root:Re-verify VM booted
ERROR:root:Command lxc exec testbed -- lsb_release -a returned a code of 255
ERROR:root: STDOUT:
DEBUG:root:Re-verify VM booted
DEBUG:root:Command lxc exec testbed -- lsb_release -a:
DEBUG:root: STDOUT: Distributor ID: Ubuntu
Description: Ubuntu 22.04.3 LTS
Release: 22.04
Codename: jammy

Vm started and booted successfully
DEBUG:root:Cleaning up images and VMs created during test
ERROR:root:Command lxc image delete 9d07aa283fa84a94a3fa5e0dd7ee79ef returned a code of 1
ERROR:root: STDOUT:
DEBUG:root:Command lxc delete --force testbed:
DEBUG:root: Command returned no output
PASS: Virtual Machine was successfully started and checked

[Hook25]

We have decided to clean up our issue tracker to systematize our approach to backlog grooming and planning. If this issue is still relevant to you, please reopen it and tag one of the maintainers or reach out on ~Checkbox on Mattermost. Going forward all issues that have received no activity for more than a year will be marked as 'stale' and closed after one week

[syncronize-issues-to-jira]

Thank you for reporting your feedback to us!

The internal ticket has been created: https://warthogs.atlassian.net/browse/CHECKBOX-2056.

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