[Backport 2024.2] fix(artifacts): fixes around amazon 2 support removel

[mergify]

changes in 1568a5a, by mistake broke few minor logic with installation of java for offline installers and with setup of scylla doctor.

this commit addresses those, and fix the logic around both

Testing

• [ ]

PR pre-checks (self review)

• I added the relevant backport labels
• I didn't leave commented-out/debugging code

Reminders

• Add New configuration option and document them (in sdcm/sct_config.py)
• Add unit tests to cover my changes (under unit-test/ folder)
• Update the Readme/doc folder relevant to this change (if needed)

(cherry picked from commit eba5055)

Parent PR: #9231

[mergify]

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Unmerged paths:
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	both modified:   sdcm/cluster.py
	both modified:   utils/scylla_doctor.py

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