citool-config/artemis-multihost: pass post-install-script

Miroslav Vadkertirequested to merge
pass-post-install-script-multihost into main

Image mode guests in the multihost pipeline never become ready, because nobody unblocks root login on them. test-schedule-tmt-multihost passes the post-install-script option of the artemis module to tmt since gluetool-modules d55f870, but the multihost Artemis config never set it.

infrastructure MR !1531 added the option to the old config location. It never merged, and the move of the configuration to this repository dropped it.

Use enable-root.sh, the script the single-host artemis config uses.

Fixes: TFT-5320

Assisted-by: Claude Code Signed-off-by: Miroslav Vadkerti mvadkert@redhat.com

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