Improvement/cldsrv 724-backbeat-related-functional-tests

[benzekrimaha]

Please note that this PR also takles the rest of the unmigrated code , better to review it by commit to have the context

Issue: CLDSRV-724

[codecov[bot]]

:x: 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
7833	1	7832	0

View the full list of 1 :snowflake: flaky test(s)

"after each" hook for "should create a bunch of objects and their versions"::put and head object with versioning With default signature "after each" hook for "should create a bunch of objects and their versions"

Flake rate in main: 100.00% (Passed 0 times, Failed 3 times)

Stack Traces | 0.972s run time

The bucket you tried to delete is not empty.

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