Fix debian 9 check for apt cache update

[floryut]

What type of PR is this?
/kind bug

What this PR does / why we need it:
Debian 9 check is not working for apt cache check

Which issue(s) this PR fixes:

Friday 19 November 2021  14:29:38 +0000 (0:00:00.085)       0:00:04.995 ******* 
[WARNING]: raw module does not support the environment keyword
[WARNING]: raw module does not support the environment keyword
fatal: [instance-2]: FAILED! => {"changed": false, "msg": "non-zero return code", "rc": 100, "stderr": "Shared connection to 172.30.72.93 closed.\r\n", "stderr_lines": ["Shared connection to 172.30.72.93 closed."], "stdout": "E: Command line option --allow-releaseinfo-change is not understood in combination with the other options\r\n", "stdout_lines": ["E: Command line option --allow-releaseinfo-change is not understood in combination with the other options"]}
...ignoring
fatal: [instance-1]: FAILED! => {"changed": false, "msg": "non-zero return code", "rc": 100, "stderr": "Shared connection to 172.30.72.92 closed.\r\n", "stderr_lines": ["Shared connection to 172.30.72.92 closed."], "stdout": "E: Command line option --allow-releaseinfo-change is not understood in combination with the other options\r\n", "stdout_lines": ["E: Command line option --allow-releaseinfo-change is not understood in combination with the other options"]}
...ignoring

Special notes for your reviewer:
Check https://gitlab.com/kargo-ci/kubernetes-sigs-kubespray/-/jobs/1801186554 (line 8149)

Does this PR introduce a user-facing change?:

Fix debian 9 check for apt cache update in bootstrap-os

[cristicalin]

Good catch!

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cristicalin, floryut

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