fix(artifacts): use proper parameter name for the provision type

[vponomaryov]

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)

[scylladb-promoter]

✅ Test Summary: PASSED

✅ Precommit: PASSED

Total	Passed	Failed	Skipped
24	14	0	10

✅ Tests: PASSED

Total	Passed	Failed	Errors	Skipped
1705	1690	0	0	15

Full build log

[fruch]

LGTM