fix:(ansible) update model download logic

[bgilby59]

Description

This PR fixes edge-auto to align with Autoware Universe's new model download logic.

Related Links

• Move downloading artifacts outside CMake autowarefoundation/autoware.universe#3137
• fix:(ansible) update model download logic edge-auto#17
• fix:(ansible) update model download logic edge_auto_launch#15
• fix:(ansible) update model download logic edge_auto_jetson_launch#10

Tests performed

Centerpoint and YOLOX from edge-auto and edge-auto-jetson respectively, were launched, and I confirmed that they were outputting predictions at the correct frequency (~10 Hz).

Effects on system behavior

Previously, edge-auto's model downloading was broken by an update to Autoware Universe, such that YOLOX and Centerpoint would not be able to launch. This PR updates edge-auto to correctly download models under Autoware Universe's new scheme.

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