add older debian tests [APMON-1505]

[emmettbutler]

This change adds debian 11 and 10 to the list of auto-injection tested OSes

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[robertomonteromiguel]

I tried in GitLab and it's failing because a timeout.
It's trying to generate the AMI, and executing the test for all other "not default" vms.
To test this, I advocate adding the "--vm-only-branch debian" in the gitlab ci (job onboarding_install_extra_vms). Run the tests with this change, and then remove the change before merge